Dear Isuru,
as already said by Caetano only method for to figure out if you are insert all data in the FM is run FM BAPI BAPI_PRODORDCONF_GET_TT_PROP whit the PROPOSE = XXXXX in order to visualize as
should be fill all structures of the BAPI BAPI_PRODORDCONF_GET_TT.
Normally for good moviments structures the first one thing to check is the backflush acitve in the master data of the component or in work center, this FM considers only backflush components.
Make sure also che structures LINK_CONF_GOODSMOV.
Sometimes the error description could be wrong and not describe the really problem indicated.
i hope to have been useful for you.
Daniele