Hello,
According to SAP development support's comment, correction of detected errors in background is not possible. Users should be aware of the inconsistencies, check and correct them explicity.
The /SAPAPO/OM17 consistency check and also potential inconsistency correction attempts should only run in a "posting-free period", i.e.in times of very low business activity on the system. It should run preferably in times when no CIF transfers happen and no planning jobs are running and no interactive planning is performed. For inconsistency repair attempts it is even more important to run them in times of low business activity.
In general the /SAPAPO/OM17 is only meant to identify and correct sporadic inconsistencies. If inconsistencies occur on a regular basis (i.e. after they're corrected it doesn't take long until the same inconsistencies reoccur), then it should be investigated what transaction or report causes those inconsistencies.
Best Regards,
Ada