3437587 - SCPR3 | ZAIF_EDOC_EU_V37 | BC Set -> Upload | Keeps asking to assign a package

You upload BC Set ZAIF_EDOC_EU_V37 in transaction SCPR3, and enter a package to the object. The system keeps asking to assign a package.

Electronic Invoice, Countries/Regions, AIF Customizing, AIF, eDocument, eDoc, eInvoicing, e-Invoicing, electronic invoicing, e-document, e-Document, e-Docs, e-Doc, e-docs, e-doc, Document Compliance, DC, Peppol Exchange, Document and Reporting Compliance, electronic document processing, UBL, PEPPOL  , KBA , BC-CUS-TOL-BCD , Business Configuration Sets , CA-GTF-CSC-EDO-PAP , Document Compliance Peppol Exchange Service , Problem