Reference
Markdown exportBT-156 Buyer Item Identifier
An identifier assigned by the buyer to the item.
Quick answer
Line items
The goods or services on each invoice line, including quantities, prices, and VAT.
Quick actions
In plain language
Identifies the invoiced goods or services for buyer, seller, and automated procurement or inventory matching.
What you usually enter here
Buyer-assigned item identifier
Typical valid values include: BUYER-SKU-42
Defined by EN 16931 for invoice line item identification; mandatory item names and optional identifiers must follow the listed scheme and country code rules.
Where the field sits
- Invoice
- cac:InvoiceLine
- cac:Item
- cac:BuyersItemIdentification
- cbc:IDBT-156
- rsm:CrossIndustryInvoice
- rsm:SupplyChainTradeTransaction
- ram:IncludedSupplyChainTradeLineItem
- ram:SpecifiedTradeProduct
- ram:BuyerAssignedIDBT-156
Valid Examples
- BUYER-SKU-42
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-156
Data Type:
identifier
Cardinality:
0..1
Requirement:
Optional
XML Implementation
/Invoice/cac:InvoiceLine/cac:Item/cac:BuyersItemIdentification/cbc:ID/rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:IncludedSupplyChainTradeLineItem/ram:SpecifiedTradeProduct/ram:BuyerAssignedIDNext step
Create an XRechnung from your PDF
The converter reads the invoice and shows the fields it found before download, so you can check and correct the values. No PDF? Fill in the XRechnung directly in the form.
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