Visentin’s laws are Murphy’s laws applied to SAP integration projects.
1. You don’t need to know every BAPI in a SAP system because the BAPI that you need doesn’t exist.
2. The performance of an iDoc integration is in inverse proportion to the number of fields into the iDoc.
3. If a field is useful is documented in German; if a field is indispensable the name of the field si a not documented German acronym (and you don’t know German).