If you encounter an issue with the SAP Integration for Vault Professional the first thing to do is to enable debugging in the "vault_sap_interface.xml" file.
This is located in this folder
C:\Program Files\Autodesk\Vault Professional 201x\Explorer\Extensions\Integration for SAP.
Edit this file with Notepad and change DEBUG="0" to DEBUG="1"
Then in the SAP Integration click SAP>About
Click Export to XML
Name the log file as Debug (for example).
Error messages will appear in this debug file.
If you cannot find the solution to the error yourself, you will need to supply both the "vault_sap_interface.xml" and the debug file to Autodesk support for further investigation.
IMPORTANT NOTE - If you leave debugging turned on, the debug file will grow significantly over time. So once you captured the error, remember to set it back to DEBUG="0"