SAP Message AC440 - Posting to affiliated companies permits one selection only

Diagnosis
You selected both options for posting with affiliated companies.
Note that a transfer between affiliated companies can have two results:
For Consolidation, the transaction is posted to the respectiveaffiliated company.
In the group depreciation area, you can transfer at historicalacquisition and production costs or historical depreciation.
The first indicator covers both of these options, the second flag (net)only applies to the first option.

Procedure
Change your entry.