What are your doubts about authorization groups?
There is no user-exit to update VTBFHA_SAKTIV.
You can write your own programm in order to update this field. The same process is used in programm RFTR_MIGRATION_EXCLUDE_OTC. But i do not recommend to do it - especially because of the absence of status "6" in 4.6 version. All other statuses can cause you problems.
What you can do else:
- Use badi TPM_ACCIF_TRAC, method ACCIT_EXIT: check if IM_DATA-PRODUCT_TYPE fits you need to block product types from postings and then use function module TB_POSTING_MESSAGE_STORE to issue an error with type E - "Specific product types (51A, etc) are blocked for posting". This error will appear in the log for used transactions (TBB1, TPM1, etc) and will stop from posting product types you need.