Affects: All DSP versions prior to 6.7.0
The default user credentials for an SAP connection are added on the Data Source Registry page in Common on the Vertical View.
After they are added, if the user name and password are updated in SAP, and the credentials are then updated on the Data Source Registry page, the original credentials are still used. A connection attempt fails.
As a workaround, reset IIS. The updated credentials added on the Data Source Registry page are then used for the connection.
Refer to the article Incorrect Credentials when Posting for additional information about updating credentials for an SAP connection.
Please note, this issue was fixed in DSP 6.7