- You have externally created Customer Invoice requests with an External Reference assigned.
- When Reporting to the Tax Authorities, the standard Webservice used only pass on the Customer Invoice ID created by the system .
- You want to keep the External Reference so that it overwrites the ID on your Customer Invoices.
SAP Business ByDesign
This is the expected behavior, only the Customer Invoice ID can be used for fiscal reporting.
The documents that have an External Reference are Customer Invoice requests and not the actual documents used to report to the Fiscal Authorities.
Only Customer Invoices are considered legal documents, hence only the ID assigned to them by SAP Business ByDesign are valid and legal identification.
If you want to keep track of the External Reference on your Customer Invoices, you can set up the Business Configuration activity: External Reference Number Determination for Customer Invoice, so that it is carried over to the Invoice documents.
Please refer to Help Document Configuration: External Reference Number Determination for Customer Invoice accessible from the Help Center of SAP Business ByDesign.
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