How To Fix AA390 - Transaction type &1 not possible (posting to affiliated company)

AA390 - Overview

• Message type: E = Error

• Message class: AA - Messages for Asset Accounting

• Message number: 390

• Message text: Transaction type &1 not possible (posting to affiliated company)

What causes this issue?

For the current document, you specified either implicitly (via the
customer/vendor), or explicitly (with a manual entry), that this
posting is to an affiliated company. In this case, Asset Accounting
requires you to use special transaction types. This enables the system
to separately identify such transactions.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check the line items that you have already entered, and the transaction
type you entered.

Error message extract from SAP system. Copyright SAP SE.

AA390 - Details

• The SAP error message AA390, which states "Transaction type &1 not possible (posting to affiliated company)," typically occurs in the context of Asset Accounting (FI-AA) when you attempt to post a transaction type that is not allowed for affiliated companies. This can happen in various scenarios, such as when trying to transfer assets or post transactions between affiliated companies.
  
  Cause:
  
  Transaction Type Restrictions: The transaction type you are trying to use is not configured to allow postings to affiliated companies. Each transaction type in SAP can have specific settings that determine whether it can be used for intercompany transactions.
  Configuration Settings: The configuration for asset accounting may not allow postings to affiliated companies for the specific transaction type you are using.
  Company Code Settings: The company codes involved may not be set up correctly to allow intercompany transactions.
  
  
  Solution:
  
  
  Check Transaction Type Configuration:
  
  Go to the configuration settings for Asset Accounting (Transaction code: SPRO).
  Navigate to Financial Accounting