Hello Nishti,
reading all those answers you can notice that account determination settings review is necessary.
You may also check if there is user-exit involved. The one which usually impact is :
- userexit_account_prep_kompcv in program RV60AFZZ
If you run VFX3 to get error message it will put you on direction to the cause because you can take error code displayed and look for existent incidents in SAP SCN forums as well.
Best Regards and Good Luck !! 
Christian Rosa