What is the difference between PSYST-BEGDA and PSYST-DDATE?

Hello everyone,

In PA transactions, there is always that structure PSYST in the background that contains pretty useful data. In user exits ZXPADU01 and ZXPADU02 it is even available as a parameter (IPSYST) so you have these values at your disposal in the exit coding.

However, I wonder what the difference between the fields BEGDA and DDATE in that structure is. Browsing a little through the code revealed that DDATE also appears to be filled with a start date, and when I set a break point and inspected the fields in the debugger, both fields contained the same value. However, I reckon that will not always be the case, otherwise DDATE would be useless, no?

Does anybody happen to know the difference?

Thank you in advance,

Jens Petersen