Diagnosis
A returnable packaging account posting is always entered with referenceto a returnable packaging account and a corresponding partnerrelationship. A partner relationship consists of alocation and an exchange partner.
In this case, no partner relationship could be found, as the entriesunder 'location' are incomplete.

Procedure
For automatic postings, the partners involved are calculated from thematerial postings. You make these settings in the IMG activityAssign account posting types to movementtypes.
For manual postings, you can enter location and exchange partnerdirectly. Alternatively, you can enter the partners under theirreturnable packaging partner role, such as sender or recipient. Youassign these roles to location and exchange partner in the IMG activityMaintain account posting types.