Reference
Markdown exportBT-129 Invoice line quantity
The quantity of items (goods or services) in the invoice line.
BT-129 (Invoiced quantity) is the count of items billed on a line, paired with BT-130 (unit of measure). Mandatory under EN 16931. Decimal numbers are allowed for divisible units (e.g. hours, kilograms). Negative values represent returns. Example: 10.
BT-129 · EN 16931 / XRechnung 3.x
BT Reference Card
Key EN 16931 and XRechnung facts for this business term.
- BT code
BT-129- Name
- Invoice line quantity
- Cardinality
- Mandatory (M)
- Business group
- BG-25 INVOICE LINE
- Data type
- Quantity
- Example value
10
Line items
The goods or services on each invoice line, including quantities, prices, and VAT.
Quick actions
In plain language
The quantity of items (goods or services) in the invoice line.
Essential for calculating line totals and inventory management.
What you usually enter here
Decimal number with up to 2 decimal places, positive
Typical valid values include: 1, 10, 0.5, 100.25
Mandatory for each invoice line according to EN 16931-1.
Where the field sits
- Invoice
- cac:InvoiceLine
- cbc:InvoicedQuantityBT-129
- rsm:CrossIndustryInvoice
- rsm:SupplyChainTradeTransaction
- ram:IncludedSupplyChainTradeLineItem
- ram:SpecifiedLineTradeDelivery
- ram:BilledQuantityBT-129
What goes wrong often
Avoid values like: -1, 0, quantity
Relevant rule codes: BR-22
Valid Examples
- 1
- 10
- 0.5
- 100.25
Invalid Examples
- -1
- 0
- quantity
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-129
Data Type:
quantity
Cardinality:
1..1
Requirement:
Mandatory
Since Version:
XRechnung 1.0+
XML Implementation
/Invoice/cac:InvoiceLine/cbc:InvoicedQuantity/rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:IncludedSupplyChainTradeLineItem/ram:SpecifiedLineTradeDelivery/ram:BilledQuantityValidation Rules
BR-22
BR-22
Next step
Check whether your XRechnung sets BT-129 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-22. 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.