How To Fix /SCMTMS/TCC_HL_MSG821 - Calculation could not be completed after &1 iterations

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMTMS/TCC_HL_MSG -

• Message number: 821

• Message text: Calculation could not be completed after &1 iterations

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 /SCMTMS/TCC_HL_MSG821 - Calculation could not be completed after &1 iterations ?

  The SAP error message /SCMTMS/TCC_HL_MSG821 Calculation could not be completed after &1 iterations typically occurs in the context of SAP Transportation Management (TM) when the system is unable to complete a calculation process after a specified number of iterations. This can happen during various processes, such as route optimization, freight calculation, or other planning activities.
  Causes:
  
  Complexity of the Data: The data being processed may be too complex, leading to excessive iterations without convergence.
  Configuration Issues: Incorrect or incomplete configuration settings in the transportation management system can lead to calculation failures.
  Data Quality Issues: Missing or incorrect master data (e.g., transportation lanes, freight agreements, etc.) can cause the calculation to fail.
  Performance Issues: System performance problems, such as insufficient resources or high load, can affect the calculation process.
  Infinite Loops: The algorithm may be stuck in an infinite loop due to logical errors in the configuration or data.
  
  Solutions:
  
  Review Configuration: Check the configuration settings in SAP TM to ensure they are set up correctly. Pay special attention to the settings related to the calculation process that is failing.
  Data Validation: Validate the master data and transactional data involved in the calculation. Ensure that all necessary data is complete and accurate.
  Increase Iteration Limit: If appropriate, consider increasing the maximum number of iterations allowed for the calculation. This can sometimes help in cases where the calculation is close to convergence but needs more iterations.
  Analyze Logs: Check the application logs and error logs for more detailed information about what might be causing the calculation to fail. This can provide insights into specific data or configuration issues.
  Performance Tuning: If performance is an issue, consider optimizing the system resources or tuning the performance settings in SAP TM.
  Consult SAP Notes: Look for relevant SAP Notes or Knowledge Base Articles (KBAs) that may address this specific error message or provide patches and updates.
  Engage SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. They can provide more in-depth analysis and troubleshooting.
  
  Related Information:
  
  SAP TM Documentation: Review the official SAP documentation for Transportation Management to understand the configuration and calculation processes better.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  Testing Environment: If possible, replicate the issue in a testing environment to experiment with different configurations and data sets without affecting production.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution.