Reference
Markdown exportBT-149 Item Price Base Quantity
The quantity on which the item net price is based.
Quick answer
Line items
The goods or services on each invoice line, including quantities, prices, and VAT.
Quick actions
In plain language
The quantity on which the item net price is based.
The quantity on which the item net price is based.
Describes how the invoice line price is derived, including base quantity and any price-level discount, so automated checks can recalculate line totals.
What you usually enter here
Positive decimal quantity
Typical valid values include: 1, 100
Defined by EN 16931 for line price calculation data; required fields must satisfy the listed BR and Peppol calculation constraints.
What goes wrong often
Avoid values like: 0, -1
Relevant rule codes: PEPPOL-EN16931-R120, PEPPOL-EN16931-R121
Examples in context
Describes how the invoice line price is derived, including base quantity and any price-level discount, so automated checks can recalculate line totals.
Defined by EN 16931 for line price calculation data; required fields must satisfy the listed BR and Peppol calculation constraints.
Valid Examples
- 1
- 100
Invalid Examples
- 0
- -1
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-149
Data Type:
quantity
Cardinality:
0..1
Requirement:
Optional
Since Version:
Optional
XML Implementation
/Invoice/cac:InvoiceLine/cac:Price/cbc:BaseQuantityValidation Rules
PEPPOL-EN16931-R120
PEPPOL-EN16931-R120
PEPPOL-EN16931-R121
PEPPOL-EN16931-R121
Next step
Check whether your XRechnung sets BT-149 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 PEPPOL-EN16931-R120. 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
Describes how the invoice line price is derived, including base quantity and any price-level discount, so automated checks can recalculate line totals.
Legal Requirement
Defined by EN 16931 for line price calculation data; required fields must satisfy the listed BR and Peppol calculation constraints.