HI,
When you will do the entry in the IT2002 as business trip or else system will generate entry in the TOP through function P2002 and which will be evaluated further in the time schema.
So share your IT2002 entry, then log details of function P2002 from time log (TIP and TOP) and then share error details.(I think this error occurs in TE20 PCR).
Regards,
Sankarsan