How To Fix MH066 - Tables MARA and MAW1 are inconsistent

SAP Error Message - Details

• Message type: E = Error

• Message class: MH - Maintain Material Master Data (Retail)

• Message number: 066

• Message text: Tables MARA and MAW1 are inconsistent

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MH066 - Tables MARA and MAW1 are inconsistent ?

  The SAP error message MH066 indicates that there is an inconsistency between the MARA (General Material Data) and MAW1 (Material Master: Work Scheduling) tables. This inconsistency can occur due to various reasons, such as data corruption, incomplete updates, or issues during data migration.
  Causes:
  
  Data Corruption: The data in either the MARA or MAW1 table may have been corrupted due to system errors or improper updates.
  Incomplete Updates: If a material master record was not fully updated or saved, it could lead to inconsistencies between related tables.
  Custom Development: Custom programs or enhancements that manipulate material master data may inadvertently cause inconsistencies.
  Data Migration Issues: During data migration from legacy systems to SAP, if the mapping or transformation rules are not correctly applied, inconsistencies can arise.
  
  Solutions:
  
  Consistency Check: Use transaction code MM03 to check the material master data for the affected material. This can help identify which fields are inconsistent.
  Reorganization: You can use transaction code MM17 to reorganize or mass change material master records. This can help in correcting inconsistencies.
  Repair Tools: SAP provides tools like MARA_MAW1_CHECK to check and repair inconsistencies between MARA and MAW1. You may need to consult with your SAP Basis or technical team to run these tools.
  Manual Correction: If the inconsistency is limited to a few records, you can manually correct the data in the affected tables using transaction codes like MM02 (Change Material) or MM01 (Create Material).
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available that can resolve the issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM01, MM02, MM03, MM17, and SE11 (Data Dictionary) for checking table structures.
  Backup: Always ensure that you have a backup of your data before making any changes or running repair tools.
  Testing: After making corrections, conduct thorough testing to ensure that the changes have resolved the inconsistency without introducing new issues.
  Documentation: Document any changes made for future reference and to assist in troubleshooting similar issues.
  
  If the problem persists after trying the above solutions, it may be necessary to engage SAP support for further assistance.