Greetings Pete,
Thank you very much for your help so far. To answer your queries:
- We do not have developments around TL operations
- In both cases the change to negative works appears to have been done by the same user who amended the Task List. In one case it's when the user saved the amended Task List, in the other it's around an hour later (and this is the only change on the change document for that time). In both cases the user has amended the Service package for the Operation.
Also, the AEUZEIT/AEDAT are saved in the PLKZ table for those Task Lists, so this is the header level.
We've raised an OSS message to SAP and they have provided a pilot note with a corrective report Z_PLPO_ARBEI for the database inconsistency, but we were not able to replicate or find the root cause yet.
Have a good weekend and thanks again!