Thanks Nuno,
We already know the underlying SAP data tables & fields e.g. BKPF, BSEG, BSID, BSAD etc. We also have the MS Dynamics import templates e.g. "Vendor Invoice Header", "Vendor Invoice Line" etc. The next step is the field mapping. So that's mapping the SAP table/field to MS Dynamics Entity Template/Field. I appreciate it's not going to be as simple as a 1 to 1 mapping and there is going to be some transformation (ETL) required. It was finding any existing documentation on this mapping that was of interest to me. But i'm not sure anything exists.