# FX-SCH-A-000284

Source: https://xmlvalid.com/rules/FX-SCH-A-000284

> Element 'ram:AttachmentBinaryObject' may occur at maximum 1 times.

- Level: error
- Rule sets: Factur-X EN 16931 rules 1.09.2, Factur-X EXTENDED rules 1.09.2
- Context: `/rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeAgreement/ram:AdditionalReferencedDocument[ram:TypeCode="916"]`
- Test: `count(ram:AttachmentBinaryObject)<=1`

Validate a document against these rules: https://xmlvalid.com/validate