The customer experience that after generating a SAF-T file (ver.1.30), there are five supplier-IDs used in GL (Transactions) which are not included in the MasterFiles Suppliers.
What we have identified so far, is that one of the invoices has arrived in period 12 (previous year), the invoice is finally posted in the following periode 1, and then has a credit invoice matched in period 2.
Anyone with similar experiences?