How To Fix FAA_POST003 - New Asset Accounting not compatible with Classic Real Estate (RE)

SAP Error Message - Details

• Message type: E = Error

• Message class: FAA_POST - FIAA Posting Messages (Object-Oriented Kernel)

• Message number: 003

• Message text: New Asset Accounting not compatible with Classic Real Estate (RE)

What causes this issue?

Classic Real Estate Management (RE) is active in your system.
However, this component is <ZH>not</> compatible with the business
function <AB>FIN_AA_PARALLEL_VAL</>.
However, the component <LS>Flexible Real Estate Management (RE-FX)</> is
compatible with the business function <AB>FIN_AA_PARALLEL_VAL</>;
Flexible Real Estate Management is part of the Enterprise Extension
EA-FIN.

System Response

It is <ZH>not</> possible to activate the business function <AB>
FIN_AA_PARALLEL_VAL</>.

How to fix this error?

If you want to use the business function <AB>FIN_AA_PARALLEL_VAL</>, you
have to activate the Enterprise Extension EA-FIN, and if applicable,
replace classic Real Estate Management with <LS>Flexible Real Estate
Management (RE-FX)</>. To do so, proceed as follows:
Activate the Enterprise Extension EA-FIN (if you have not already done
so).
In Customizing for <LS>Flexible Real Estate Management (RE-FX)</>,
activate the Real Estate Extension. This automatically deactivates
classic Real Estate Management (RE). Make sure that you read the
documentation under <DS:SIMG.REFXV_TIVMIADDON>Activate Real Estate
Extension</>.
Activate the business function <AB>FIN_AA_PARALLEL_VAL</>.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FAA_POST003 - New Asset Accounting not compatible with Classic Real Estate (RE) ?

  The SAP error message FAA_POST003 indicates that there is an incompatibility between the New Asset Accounting (FI-AA) and the Classic Real Estate Management (RE) module. This error typically arises when there are attempts to post transactions that involve both the New Asset Accounting and Classic RE, which are not designed to work together seamlessly.
  
  Cause:
  
  Incompatibility: The New Asset Accounting (introduced in SAP S/4HANA) has different data structures and processes compared to the Classic Real Estate Management. This incompatibility can lead to issues when trying to post transactions that involve both systems.
  
  Configuration Issues: The system may not be properly configured to handle transactions that involve both New Asset Accounting and Classic RE.
  Data Migration: If there has been a migration from Classic to New Asset Accounting, there may be residual data or configurations that are causing conflicts.
  
  
  Solution:
  
  Review Configuration: Check the configuration settings for both the New Asset Accounting and Classic RE. Ensure that