Scenario: An SAP system has been upgraded from 4.6C to ECC6.0. But in ECC 6.0, the password can consist of 40 characters. For some reasons, this has to be restricted to 8 characters (same as old release).
Solution: In this case, the password has to be enabled for backward compatibility. To achieve this, do the following:
Go to transaction RZ11.
Enter the parameter "login/password_downwards_compatibility".
Click on Display:
By default, the parameter is set to 1.
Click on the documentation to get the possible values of the parameters:
Now click on "Change Value"
Change the parameter value from 1 to 5 for backward compatibility: