EN 16931 core rules: all 224 validation rules explained

The EN 16931 core rules apply to every European e-invoice. BR-xx checks mandatory fields, BR-CO-xx the arithmetic of the totals, BR-CL-xx code lists, BR-DEC-xx decimals and BR-S/E/Z/AE/K/G/O the VAT per category.

Source: EN 16931-1:2017 schematron (CEN TC434, via Peppol BIS 3.0.20)

All rules (224)

ID	Rule	Severity
`BR-01`	Specification identifier (BT-24) is missing	Error
`BR-02`	Invoice number (BT-1) is missing	Error
`BR-03`	Invoice issue date (BT-2) is missing	Error
`BR-04`	Invoice type code (BT-3) is missing	Error
`BR-05`	Invoice currency code (BT-5) is missing	Error
`BR-06`	Seller name (BT-27) is missing	Error
`BR-07`	Buyer name (BT-44) is missing	Error
`BR-08`	Seller postal address is missing	Error
`BR-09`	Seller country code (BT-40) is missing	Error
`BR-10`	Buyer postal address (BG-8) is missing	Error
`BR-11`	Buyer country code (BT-55) is missing	Error
`BR-12`	An Invoice shall have the Sum of Invoice line net amount	Error
`BR-13`	An Invoice shall have the Invoice total amount without VAT	Error
`BR-14`	An Invoice shall have the Invoice total amount with VAT	Error
`BR-15`	An Invoice shall have the Amount due for payment	Error
`BR-16`	Invoice has no invoice line (BG-25)	Error
`BR-17`	The Payee name shall be provided in the Invoice, if the Payee is different from the Seller	Error
`BR-18`	The Seller tax representative name shall be provided in the Invoice, if the Seller has…	Error
`BR-19`	The Seller tax representative postal address shall be provided in the Invoice, if the…	Error
`BR-20`	The Seller tax representative postal address shall contain a Tax representative…	Error
`BR-21`	Each Invoice line shall have an Invoice line identifier	Error
`BR-22`	Each Invoice line shall have an Invoiced quantity	Error
`BR-23`	An Invoice line shall have an Invoiced quantity unit of measure code	Error
`BR-24`	Each Invoice line shall have an Invoice line net amount	Error
`BR-25`	Each Invoice line shall contain the Item name	Error
`BR-26`	Each Invoice line shall contain the Item net price	Error
`BR-27`	The Item net price shall NOT be negative	Error
`BR-28`	The Item gross price shall NOT be negative	Error
`BR-29`	If both Invoicing period start date and Invoicing period end date are given then the…	Error
`BR-30`	If both Invoice line period start date and Invoice line period end date are given then…	Error
`BR-31`	Each Document level allowance shall have a Document level allowance amount	Error
`BR-32`	Each Document level allowance shall have a Document level allowance VAT category code	Error
`BR-33`	Each Document level allowance shall have a Document level allowance reason or a…	Error
`BR-36`	Each Document level charge shall have a Document level charge amount	Error
`BR-37`	Each Document level charge shall have a Document level charge VAT category code	Error
`BR-38`	Each Document level charge shall have a Document level charge reason or a Document…	Error
`BR-41`	Each Invoice line allowance shall have an Invoice line allowance amount	Error
`BR-42`	Each Invoice line allowance shall have an Invoice line allowance reason or an Invoice…	Error
`BR-43`	Each Invoice line charge shall have an Invoice line charge amount	Error
`BR-44`	Each Invoice line charge shall have an Invoice line charge reason or an invoice line…	Error
`BR-45`	Each VAT breakdown shall have a VAT category taxable amount	Error
`BR-46`	Each VAT breakdown shall have a VAT category tax amount	Error
`BR-47`	Each VAT breakdown shall be defined through a VAT category code	Error
`BR-48`	Each VAT breakdown shall have a VAT category rate, except if the Invoice is not…	Error
`BR-49`	A Payment instruction shall specify the Payment means type code	Error
`BR-50`	A Payment account identifier shall be present if Credit transfer information is…	Error
`BR-51`	In accordance with card payments security standards an invoice should never include a…	Error
`BR-52`	Supporting document without reference (BT-122)	Error
`BR-53`	VAT accounting currency given, but VAT total in that currency missing	Error
`BR-54`	Each Item attribute shall contain an Item attribute name and an Item attribute value	Error
`BR-55`	Each Preceding Invoice reference shall contain a Preceding Invoice reference	Error
`BR-56`	Each Seller tax representative party shall have a Seller tax representative VAT…	Error
`BR-57`	Each Deliver to address shall contain a Deliver to country code	Error
`BR-61`	If the Payment means type code means SEPA credit transfer, Local credit transfer or…	Error
`BR-62`	The Seller electronic address shall have a Scheme identifier	Error
`BR-63`	The Buyer electronic address shall have a Scheme identifier	Error
`BR-64`	The Item standard identifier shall have a Scheme identifier	Error
`BR-65`	The Item classification identifier shall have a Scheme identifier	Error
`BR-AE-01`	An Invoice that contains an Invoice line, a Document level allowance or a Document…	Error
`BR-AE-02`	An Invoice that contains an Invoice line where the Invoiced item VAT category code is…	Error
`BR-AE-03`	An Invoice that contains a Document level allowance where the Document level allowance…	Error
`BR-AE-04`	An Invoice that contains a Document level charge where the Document level charge VAT…	Error
`BR-AE-05`	In an Invoice line where the Invoiced item VAT category code is "Reverse charge" the…	Error
`BR-AE-06`	In a Document level allowance where the Document level allowance VAT category code is…	Error
`BR-AE-07`	In a Document level charge where the Document level charge VAT category code is…	Error
`BR-AE-08`	In a VAT breakdown where the VAT category code is "Reverse charge" the VAT category…	Error
`BR-AE-09`	The VAT category tax amount in a VAT breakdown where the VAT category code is "Reverse…	Error
`BR-AE-10`	Reverse-charge breakdown without exemption reason	Error
`BR-AF-01`	An Invoice that contains an Invoice line, a Document level allowance or a Document…	Error
`BR-AF-02`	An Invoice that contains an Invoice line where the Invoiced item VAT category code is…	Error
`BR-AF-03`	An Invoice that contains a Document level allowance where the Document level allowance…	Error
`BR-AF-04`	An Invoice that contains a Document level charge where the Document level charge VAT…	Error
`BR-AF-05`	In an Invoice line where the Invoiced item VAT category code is "IGIC" the invoiced…	Error
`BR-AF-06`	In a Document level allowance where the Document level allowance VAT category code is…	Error
`BR-AF-07`	In a Document level charge where the Document level charge VAT category code is "IGIC"…	Error
`BR-AF-08`	For each different value of VAT category rate where the VAT category code is "IGIC",…	Error
`BR-AF-09`	The VAT category tax amount in a VAT breakdown where VAT category code is "IGIC" shall…	Error
`BR-AF-10`	A VAT breakdown with VAT Category code "IGIC" shall not have a VAT exemption reason…	Error
`BR-AG-01`	An Invoice that contains an Invoice line, a Document level allowance or a Document…	Error
`BR-AG-02`	An Invoice that contains an Invoice line where the Invoiced item VAT category code is…	Error
`BR-AG-03`	An Invoice that contains a Document level allowance where the Document level allowance…	Error
`BR-AG-04`	An Invoice that contains a Document level charge where the Document level charge VAT…	Error
`BR-AG-05`	In an Invoice line where the Invoiced item VAT category code is "IPSI" the Invoiced…	Error
`BR-AG-06`	In a Document level allowance where the Document level allowance VAT category code is…	Error
`BR-AG-07`	In a Document level charge where the Document level charge VAT category code is "IPSI"…	Error
`BR-AG-08`	For each different value of VAT category rate where the VAT category code is "IPSI",…	Error
`BR-AG-09`	The VAT category tax amount in a VAT breakdown where VAT category code is "IPSI" shall…	Error
`BR-AG-10`	A VAT breakdown with VAT Category code "IPSI" shall not have a VAT exemption reason…	Error
`BR-B-01`	An Invoice where the VAT category code (BT-151, BT-95 or BT-102) is “Split payment”…	Error
`BR-B-02`	An Invoice that contains an Invoice line, a Document level allowance or a Document…	Error
`BR-CL-01`	Invoice type code is not a valid UNTDID 1001 code	Error
`BR-CL-03`	currencyID attribute is not an ISO 4217 code	Error
`BR-CL-04`	Invoice currency code is not an ISO 4217 code	Error
`BR-CL-05`	Tax currency code MUST be coded using ISO code list 4217 alpha-3	Error
`BR-CL-06`	Value added tax point date code MUST be coded using a restriction of UNTDID 2005	Error
`BR-CL-07`	Object identifier identification scheme identifier MUST be coded using a restriction…	Error
`BR-CL-08`	Invoiced note subject code shall be coded using UNCL4451	Error
`BR-CL-10`	Party identifier scheme is not an ISO 6523 ICD code	Error
`BR-CL-11`	Any registration identifier identification scheme identifier MUST be coded using one…	Error
`BR-CL-13`	Item classification scheme is not a UNTDID 7143 code	Error
`BR-CL-14`	Country code is not an ISO 3166-1 code	Error
`BR-CL-15`	Country codes in an invoice MUST be coded using ISO code list 3166-1	Error
`BR-CL-16`	Payment means in an invoice MUST be coded using UNCL4461 code list	Error
`BR-CL-17`	Invoice tax categories MUST be coded using UNCL5305 code list	Error
`BR-CL-18`	Invoice tax categories MUST be coded using UNCL5305 code list	Error
`BR-CL-19`	Coded allowance reasons MUST belong to the UNCL 5189 code list	Error
`BR-CL-20`	Coded charge reasons MUST belong to the UNCL 7161 code list	Error
`BR-CL-21`	Item standard identifier scheme identifier MUST belong to the ISO 6523 ICD code list	Error
`BR-CL-22`	Tax exemption reason code identifier scheme identifier MUST belong to the CEF VATEX…	Error
`BR-CL-23`	Unit code is not a UN/ECE Recommendation 20 or 21 code	Error
`BR-CL-24`	For Mime code in attribute use MIMEMediaType	Error
`BR-CL-25`	Endpoint identifier scheme identifier MUST belong to the CEF EAS code list	Error
`BR-CL-26`	Delivery location identifier scheme identifier MUST belong to the ISO 6523 ICD code list	Error
`BR-CO-03`	Tax point date and tax point date code both given	Error
`BR-CO-04`	Invoice line without VAT category code (BT-151)	Error
`BR-CO-05`	Document level allowance reason code and Document level allowance reason shall…	Error
`BR-CO-06`	Document level charge reason code and Document level charge reason shall indicate the…	Error
`BR-CO-07`	Invoice line allowance reason code and Invoice line allowance reason shall indicate…	Error
`BR-CO-08`	Invoice line charge reason code and Invoice line charge reason shall indicate the same…	Error
`BR-CO-09`	VAT identifier has no valid country prefix	Error
`BR-CO-10`	Sum of line net amounts (BT-106) does not match the lines	Error
`BR-CO-11`	Sum of document level allowances (BT-107) is wrong	Error
`BR-CO-12`	Sum of document level charges (BT-108) is wrong	Error
`BR-CO-13`	Total without VAT (BT-109) does not add up	Error
`BR-CO-14`	Total VAT amount (BT-110) does not match the VAT breakdown	Error
`BR-CO-15`	Total with VAT (BT-112) is not net plus VAT	Error
`BR-CO-16`	Amount due for payment (BT-115) does not add up	Error
`BR-CO-17`	VAT category tax amount (BT-117) does not match base times rate	Error
`BR-CO-18`	An Invoice shall at least have one VAT breakdown group	Error
`BR-CO-19`	If Invoicing period is used, the Invoicing period start date or the Invoicing period…	Error
`BR-CO-20`	If Invoice line period is used, the Invoice line period start date or the Invoice line…	Error
`BR-CO-21`	Each Document level allowance shall contain a Document level allowance reason or a…	Error
`BR-CO-22`	Each Document level charge shall contain a Document level charge reason or a Document…	Error
`BR-CO-23`	Each Invoice line allowance shall contain an Invoice line allowance reason or an…	Error
`BR-CO-24`	Each Invoice line charge shall contain an Invoice line charge reason or an Invoice…	Error
`BR-CO-25`	Amount due but no due date or payment terms	Error
`BR-CO-26`	In order for the buyer to automatically identify a supplier, the Seller identifier,…	Error
`BR-DEC-01`	Document level allowance amount (BT-92) has more than 2 decimals	Error
`BR-DEC-02`	The allowed maximum number of decimals for the Document level allowance base amount is 2	Error
`BR-DEC-05`	The allowed maximum number of decimals for the Document level charge amount is 2	Error
`BR-DEC-06`	The allowed maximum number of decimals for the Document level charge base amount is 2	Error
`BR-DEC-09`	The allowed maximum number of decimals for the Sum of Invoice line net amount is 2	Error
`BR-DEC-10`	The allowed maximum number of decimals for the Sum of allowanced on document level is 2	Error
`BR-DEC-11`	The allowed maximum number of decimals for the Sum of charges on document level is 2	Error
`BR-DEC-12`	The allowed maximum number of decimals for the Invoice total amount without VAT is 2	Error
`BR-DEC-13`	The allowed maximum number of decimals for the Invoice total VAT amount is 2	Error
`BR-DEC-14`	The allowed maximum number of decimals for the Invoice total amount with VAT is 2	Error
`BR-DEC-15`	The allowed maximum number of decimals for the Invoice total VAT amount in accounting…	Error
`BR-DEC-16`	The allowed maximum number of decimals for the Paid amount is 2	Error
`BR-DEC-17`	The allowed maximum number of decimals for the Rounding amount is 2	Error
`BR-DEC-18`	The allowed maximum number of decimals for the Amount due for payment is 2	Error
`BR-DEC-19`	The allowed maximum number of decimals for the VAT category taxable amount is 2	Error
`BR-DEC-20`	The allowed maximum number of decimals for the VAT category tax amount is 2	Error
`BR-DEC-23`	Invoice line net amount (BT-131) has more than 2 decimals	Error
`BR-DEC-24`	The allowed maximum number of decimals for the Invoice line allowance amount is 2	Error
`BR-DEC-25`	The allowed maximum number of decimals for the Invoice line allowance base amount is 2	Error
`BR-DEC-27`	The allowed maximum number of decimals for the Invoice line charge amount is 2	Error
`BR-DEC-28`	The allowed maximum number of decimals for the Invoice line charge base amount is 2	Error
`BR-E-01`	An Invoice that contains an Invoice line, a Document level allowance or a Document…	Error
`BR-E-02`	An Invoice that contains an Invoice line where the Invoiced item VAT category code is…	Error
`BR-E-03`	An Invoice that contains a Document level allowance where the Document level allowance…	Error
`BR-E-04`	An Invoice that contains a Document level charge where the Document level charge VAT…	Error
`BR-E-05`	In an Invoice line where the Invoiced item VAT category code is "Exempt from VAT", the…	Error
`BR-E-06`	In a Document level allowance where the Document level allowance VAT category code is…	Error
`BR-E-07`	In a Document level charge where the Document level charge VAT category code is…	Error
`BR-E-08`	In a VAT breakdown where the VAT category code is "Exempt from VAT" the VAT category…	Error
`BR-E-09`	The VAT category tax amount In a VAT breakdown where the VAT category code equals…	Error
`BR-E-10`	VAT-exempt breakdown without exemption reason	Error
`BR-G-01`	An Invoice that contains an Invoice line, a Document level allowance or a Document…	Error
`BR-G-02`	An Invoice that contains an Invoice line where the Invoiced item VAT category code is…	Error
`BR-G-03`	An Invoice that contains a Document level allowance where the Document level allowance…	Error
`BR-G-04`	An Invoice that contains a Document level charge where the Document level charge VAT…	Error
`BR-G-05`	In an Invoice line where the Invoiced item VAT category code is "Export outside the…	Error
`BR-G-06`	In a Document level allowance where the Document level allowance VAT category code is…	Error
`BR-G-07`	In a Document level charge where the Document level charge VAT category code is…	Error
`BR-G-08`	In a VAT breakdown where the VAT category code is "Export outside the EU" the VAT…	Error
`BR-G-09`	The VAT category tax amount in a VAT breakdown where the VAT category code is "Export…	Error
`BR-G-10`	A VAT breakdown with the VAT Category code "Export outside the EU" shall have a VAT…	Error
`BR-IC-01`	An Invoice that contains an Invoice line, a Document level allowance or a Document…	Error
`BR-IC-02`	An Invoice that contains an Invoice line where the Invoiced item VAT category code is…	Error
`BR-IC-03`	An Invoice that contains a Document level allowance where the Document level allowance…	Error
`BR-IC-04`	An Invoice that contains a Document level charge where the Document level charge VAT…	Error
`BR-IC-05`	In an Invoice line where the Invoiced item VAT category code is "Intracommunity…	Error
`BR-IC-06`	In a Document level allowance where the Document level allowance VAT category code is…	Error
`BR-IC-07`	In a Document level charge where the Document level charge VAT category code is…	Error
`BR-IC-08`	In a VAT breakdown where the VAT category code is "Intra-community supply" the VAT…	Error
`BR-IC-09`	The VAT category tax amount in a VAT breakdown where the VAT category code is…	Error
`BR-IC-10`	A VAT breakdown with the VAT Category code "Intra-community supply" shall have a VAT…	Error
`BR-IC-11`	In an Invoice with a VAT breakdown where the VAT category code is "Intra-community…	Error
`BR-IC-12`	In an Invoice with a VAT breakdown where the VAT category code is "Intra-community…	Error
`BR-O-01`	An Invoice that contains an Invoice line, a Document level allowance or a Document…	Error
`BR-O-02`	An Invoice that contains an Invoice line where the Invoiced item VAT category code is…	Error
`BR-O-03`	An Invoice that contains a Document level allowance where the Document level allowance…	Error
`BR-O-04`	An Invoice that contains a Document level charge where the Document level charge VAT…	Error
`BR-O-05`	An Invoice line where the VAT category code is "Not subject to VAT" shall not contain…	Error
`BR-O-06`	A Document level allowance where VAT category code is "Not subject to VAT" shall not…	Error
`BR-O-07`	A Document level charge where the VAT category code is "Not subject to VAT" shall not…	Error
`BR-O-08`	In a VAT breakdown where the VAT category code is " Not subject to VAT" the VAT…	Error
`BR-O-09`	The VAT category tax amount in a VAT breakdown where the VAT category code is "Not…	Error
`BR-O-10`	A VAT breakdown with VAT Category code " Not subject to VAT" shall have a VAT…	Error
`BR-O-11`	An Invoice that contains a VAT breakdown group with a VAT category code "Not subject…	Error
`BR-O-12`	An Invoice that contains a VAT breakdown group with a VAT category code "Not subject…	Error
`BR-O-13`	An Invoice that contains a VAT breakdown group with a VAT category code "Not subject…	Error
`BR-O-14`	An Invoice that contains a VAT breakdown group with a VAT category code "Not subject…	Error
`BR-S-01`	An Invoice that contains an Invoice line, a Document level allowance or a Document…	Error
`BR-S-02`	An Invoice that contains an Invoice line where the Invoiced item VAT category code is…	Error
`BR-S-03`	An Invoice that contains a Document level allowance where the Document level allowance…	Error
`BR-S-04`	An Invoice that contains a Document level charge where the Document level charge VAT…	Error
`BR-S-05`	In an Invoice line where the Invoiced item VAT category code is "Standard rated" the…	Error
`BR-S-06`	In a Document level allowance where the Document level allowance VAT category code is…	Error
`BR-S-07`	In a Document level charge where the Document level charge VAT category code is…	Error
`BR-S-08`	Standard-rate taxable amount (BT-116) does not match the lines	Error
`BR-S-09`	Standard-rate VAT amount (BT-117) is not base times rate	Error
`BR-S-10`	A VAT breakdown with VAT Category code "Standard rate" shall not have a VAT exemption…	Error
`BR-Z-01`	An Invoice that contains an Invoice line, a Document level allowance or a Document…	Error
`BR-Z-02`	An Invoice that contains an Invoice line where the Invoiced item VAT category code is…	Error
`BR-Z-03`	An Invoice that contains a Document level allowance where the Document level allowance…	Error
`BR-Z-04`	An Invoice that contains a Document level charge where the Document level charge VAT…	Error
`BR-Z-05`	In an Invoice line where the Invoiced item VAT category code is "Zero rated" the…	Error
`BR-Z-06`	In a Document level allowance where the Document level allowance VAT category code is…	Error
`BR-Z-07`	In a Document level charge where the Document level charge VAT category code is "Zero…	Error
`BR-Z-08`	In a VAT breakdown where VAT category code is "Zero rated" the VAT category taxable…	Error
`BR-Z-09`	The VAT category tax amount in a VAT breakdown where VAT category code is "Zero rated"…	Error
`BR-Z-10`	Zero-rated breakdown must not carry an exemption reason	Error

Syntax restriction rules

Hundreds of small rules forbid UBL/CII elements that EN 16931 does not use. They are listed per group:

UBL-CR – UBL cardinality restrictions (678)
UBL-SR – UBL syntax restrictions (53)
UBL-DT – UBL data type restrictions (24)
CII-SR – CII syntax restrictions (454)
CII-DT – CII data type restrictions (101)

EN 16931 core rules (EN 16931-1)

All rules (224)

Syntax restriction rules