Perquisite to posting a Journal to Journal - OB13, OB62, OBD4, OB53, OBC4, OBC5

1- Define Chart of accounts - OB13
2- Assign COA to CCode - OB62
3- Define Account Group - OBD4
4- Defined Retained Earnings - OB53
5- Define Field Status Variant and FSG - OBC4
6- Assign Company Code to Field Status Variant - OBC5
All of the above were carried out and explained with the flow.
So, to post a Journal to Journal, the above itemised are things that need to be done before such can be achieved.