Reference
Markdown exportBT-158-1 Item Classification Identifier Scheme Identifier
The UNTDID 7143 code of the classification scheme used in BT-158, for example HS for the Harmonised System. It is an attribute of BT-158 and is required whenever BT-158 is present (BR-65).
Quick answer
Line items
The goods or services on each invoice line, including quantities, prices, and VAT.
Quick actions
In plain language
The UNTDID 7143 code of the classification scheme used in BT-158, for example HS for the Harmonised System. It is an attribute of BT-158 and is required whenever BT-158 is present (BR-65).
The UNTDID 7143 code of the classification scheme used in BT-158, for example HS for the Harmonised System. It is an attribute of BT-158 and is required whenever BT-158 is present (BR-65).
Identifies the invoiced goods or services for buyer, seller, and automated procurement or inventory matching.
What you usually enter here
Classification scheme identifier
Typical valid values include: HS, STI
Defined by EN 16931 for invoice line item identification; mandatory item names and optional identifiers must follow the listed scheme and country code rules.
What goes wrong often
Avoid values like: CPV
Relevant rule codes: BR-65, BR-CL-13
Examples in context
Identifies the invoiced goods or services for buyer, seller, and automated procurement or inventory matching.
Defined by EN 16931 for invoice line item identification; mandatory item names and optional identifiers must follow the listed scheme and country code rules.
Valid Examples
- HS
- STI
Invalid Examples
- CPV
XML mapping and field facts
Open the technical reference if you need XML paths, validator rule codes, legal wording, or schema-specific mapping details.
Field ID:
BT-158-1
Data Type:
code
Cardinality:
1..1
Requirement:
Optional
Since Version:
Optional
XML Implementation
/Invoice/cac:InvoiceLine/cac:Item/cac:CommodityClassification/cbc:ItemClassificationCode/@listID/CrossIndustryInvoice/SupplyChainTradeTransaction/IncludedSupplyChainTradeLineItem/SpecifiedTradeProduct/DesignatedProductClassification/ClassCode/@listIDValidation Rules
BR-65
BR-65
BR-CL-13
BR-CL-13
Next step
Check whether your XRechnung sets BT-158-1 correctly
Upload the XML file to the free validator. It applies the KoSIT rules for XRechnung 3.0 and names each finding with its rule ID, for this field for example BR-CL-13, BR-65. Creating a new invoice instead? The converter checks the invoice against the same rules and shows the findings before download.
Free, no account needed. XML file up to 2 MB.
Why the standard cares about this field
Business Context
Identifies the invoiced goods or services for buyer, seller, and automated procurement or inventory matching.
Legal Requirement
Defined by EN 16931 for invoice line item identification; mandatory item names and optional identifiers must follow the listed scheme and country code rules.