Symptom

When using T-code: ABAW to post impairment with transaction type SA1 or SA2 which copied from transaction type S01 or S02, error message AA816 “Enter another transaction type (Transaction type S01 or S02 does not exist)” is issued.

Environment

SAP release independent

Reproducing the Issue

Using T-code: ABAW to post impairment with transaction type SA1 or SA2.

Cause

1. In T-code: AO84, transaction type S01 or S02 was deleted. 
2. In table TABWK, transaction type SA1 or SA2 (BWASL) is still linked to transaction type S01 or S02(ANTBW).

Resolution

To avoid the error message AA816, you need to Change the “TrType” from “S02” to “SA2” for transaction type SA2  in Table/View : V_TABWK by using t-code:SM31.

PS: You can refer to KBA 1886171 for more details.