How To Fix M_018 - Could not add overflow segment in material mapping

SAP Error Message - Details

• Message type: E = Error

• Message class: M_ - Messages for material field length extension mapping

• Message number: 018

• Message text: Could not add overflow segment in material mapping

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 M_018 - Could not add overflow segment in material mapping ?

  The SAP error message M_018, which states "Could not add overflow segment in material mapping," typically occurs in the context of material management and inventory management within the SAP system. This error is related to the material master data and can arise due to various reasons, often linked to the configuration or data integrity issues.
  Causes:
  
  
  Data Overflow: The error may indicate that the system has reached the limit of segments that can be stored for a particular material. This can happen if there are too many entries or if the material master data is not properly maintained.
  
  
  Configuration Issues: Incorrect configuration settings in the material master or related tables can lead to this error. This includes settings related to material types, valuation classes, or other related parameters.
  
  
  Database Constraints: There may be constraints in the database that prevent the addition of new segments, such as limits on the number of records or issues with the database schema.
  
  
  Corrupted Data: If there is corrupted data in the material master or related tables, it can lead to this error.
  
  
  Solutions:
  
  
  Check Material Master Data: Review the material master data for the affected material. Ensure that there are no inconsistencies or excessive entries that could lead to overflow.
  
  
  Database Maintenance: Perform database maintenance tasks, such as reorganizing or optimizing the database tables related to material mapping. This can help in resolving issues related to data overflow.
  
  
  Configuration Review: Review the configuration settings for the material types and ensure that they are set up correctly. This includes checking the settings in the SPRO transaction (Customizing).
  
  
  Data Cleanup: If there are unnecessary or obsolete entries in the material master, consider cleaning them up to free up space for new segments.
  
  
  SAP Notes and Support: Check for any relevant SAP Notes that may address this specific error. SAP frequently releases updates and patches that can resolve known issues.
  
  
  Consult SAP Support: If the issue persists after trying the above solutions, it may be necessary to consult SAP support for further assistance. They can provide insights based on the specific configuration and version of your SAP system.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM01 (Create Material), MM02 (Change Material), and MM03 (Display Material) to manage material master data.
  SAP Documentation: Refer to SAP's official documentation for detailed information on material management and troubleshooting common errors.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to diagnose and resolve the M_018 error in your SAP system.