In S/4 it is not possible to activate segmentation for material if this material has already been used in documents(Material document, Sales order, Purchase order and etc.). Segmentation functionality is activated (LOG_SEGMENTATION) and works fine in general. We experienced problems with materials that have been used previously. It's not possible to enter segmentation data not in MM02 and nor from SGT_SETUP transaction.
In ECC 6.0 EHP7 in similar situations, it is possible to activate segmentation for the material. the system creates a blank segment and assigns already existed batches to that blank segment.
This option was disabled in S/4 (as I understand). Transaction SGT_CONVERT_MATERIAL is disabled as well and included in the blocklist.
Please consult, what may be the reason for such restriction(why it was possible in EHP7 and is restricted in S/4), and can we have some workarounds in this situation?
Thank you very much