Hello experts,
before opening an OSS-note I wanted to ask here, maybe someone has similar experiences. I found a lot of similar discussions, but most of it were about data volume, not about quantity of ABAP-table-entries.
We use Report SBAL_DELETE to reduce entries in tables BALHDR and BALDAT daily. If my understanding is correct the link between both tables is done by field LOG_HANDLE. When using the report we can see that the number of entries in the tables are decreasing. I checked this, selected logs were deleted in both tables BALHDR and BALDAT.
But it seems there is a big gap between both tables, in our System we have 13608 entries in BALHDR and 105.642.247 
entries in BALDAT. So I made some Analysis on the base of linking LOG_HANDLE-field. I found out that a lot of LOG_HANDLE's in BALDAT are NOT in BALHDR. For my understanding this shouldn't be... am I right? I just found 1 hint in scn wiki:
LOG_HANDLE record in BALDAT and BALHDR tables. - ABAP Development - SCN Wiki
Or can there be processes (especially in SCM-System) where BALDAT entries exist without linked BALHDR data?
If this is really a problem...
1. Is my suggestion correct that report SBAL_DELETE can't handle BALDAT if BALHDR is missing for the same log?
2. Did someone have a similar Situation? Or does someone have an idea how this can happen (we don't use any Z-reports related to log-creation / deletion)?
3. Does someone have an idea to solve it (except of opening OSS note 
)? Is there maybe a report to clear such entries?
Many thanks in advance!
Best regards
Harald