How To Fix /SAPAPO/SEQ120 - Internal program error (internal identifier &1)

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/SEQ -

• Message number: 120

• Message text: Internal program error (internal identifier &1)

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/SEQ120 - Internal program error (internal identifier &1) ?

  The SAP error message /SAPAPO/SEQ120 Internal program error (internal identifier &1) typically indicates that there is an internal issue within the SAP Advanced Planning and Optimization (APO) system. This error can arise from various causes, including:
  Causes:
  
  Data Inconsistencies: There may be inconsistencies or corruption in the master data or transaction data that the APO system is trying to process.
  Configuration Issues: Incorrect configuration settings in the APO system can lead to unexpected behavior and internal errors.
  Program Bugs: There may be bugs in the SAP code or in custom enhancements that are causing the program to fail.
  System Resource Limitations: Insufficient memory or other system resources can lead to internal errors during processing.
  Transport Issues: If recent changes or transports have been made, they may not have been implemented correctly, leading to errors.
  
  Solutions:
  
  Check SAP Notes: Look for relevant SAP Notes that address the specific error message. SAP frequently releases notes that provide fixes or workarounds for known issues.
  Analyze the Dump: Use transaction ST22 to analyze the short dump associated with the error. This can provide more context about what caused the error.
  Review Logs: Check the application logs (transaction SLG1) for any related messages that might give more insight into the issue.
  Data Consistency Check: Run consistency checks on the relevant master data and transaction data to identify and correct any inconsistencies.
  Configuration Review: Review the configuration settings in the APO system to ensure they are set up correctly.
  System Resources: Monitor system resources (memory, CPU) to ensure that the system is not running out of resources during processing.
  Contact SAP Support: If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP Support for assistance. Provide them with the internal identifier and any relevant logs or dumps.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ST22 (Dump Analysis), SLG1 (Application Log), and SM21 (System Log) to gather more information about the error.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Review the official SAP documentation for APO to understand the expected behavior and configuration settings.
  
  By following these steps, you should be able to diagnose and potentially resolve the /SAPAPO/SEQ120 Internal program error.