How To Fix /SAPAPO/FOT406 - Unexpected internal message; contact SAP for resolution

/SAPAPO/FOT406 - Overview

• Message type: E = Error

• Message class: /SAPAPO/FOT -

• Message number: 406

• Message text: Unexpected internal message; contact SAP for resolution

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

/SAPAPO/FOT406 - Details

• The SAP error message /SAPAPO/FOT406 Unexpected internal message; contact SAP for resolution typically indicates that there is an unexpected issue within the SAP Advanced Planning and Optimization (APO) system. This error is often related to internal processing problems, which can arise from various factors such as data inconsistencies, configuration issues, or bugs in the software.
  Possible Causes:
  
  Data Inconsistencies: There may be issues with master data or transaction data that are causing the APO system to behave unexpectedly.
  
  Configuration Issues: Incorrect settings in the APO configuration can lead to unexpected behavior.
  Software Bugs: There may be a bug in the version of SAP APO you are using, which could lead to this error.
  System Performance: If the system is under heavy load or if there are performance issues, it may lead to unexpected errors.
  Missing Authorizations: Sometimes, missing authorizations for certain transactions or data can trigger unexpected errors.
  
  Solutions:
  
  Check SAP Notes: Look for relevant SAP Notes in