Diagnosis
This message could be triggered by the following:

• You are processing a condominium management contract:

You are only allowed to assign house bank definitions to the postingparameters if they (the house bank definitions) are in the house bankoverview.

• You are processing an occupancy contract in a condominium owner company
code:
You are only allowed to assign house bank definitions to the postingparameters if they (the house bank definitions) are in the house bankoverview of the related condominium management contract.