I have tried the solution you suggested but and this is the FI document that was generated
but what i want to be posted from the SD billing is the below entry ,Kindly be noted that the retention value is 40
Posting Key | Special GL indicator | Account | Description | Amount |
09 | E | 100055 | Customer | 40 |
01 |
| 100055 | customer | 1960 |
50 |
| 41100000 | Revenue | 2000 |