How To Fix WW218 - Please maintain hierarchy material &

WW218 - Overview

• Message type: E = Error

• Message class: WW - Material group master maintenance

• Message number: 218

• Message text: Please maintain hierarchy material &

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Press the button to Maintain materials.

Error message extract from SAP system. Copyright SAP SE.

WW218 - Details

• The SAP error message WW218 ("Please maintain hierarchy material &") typically occurs in the context of SAP's Material Management (MM) or Production Planning (PP) modules. This error indicates that there is a missing or incomplete hierarchy for a material that is required for certain operations, such as planning or reporting.
  
  Cause:
  
  Missing Hierarchy Data: The material in question does not have a defined hierarchy in the system. This could be due to the material not being set up correctly or the hierarchy not being maintained.
  Incorrect Material Type: The material type may not support hierarchy structures, or the hierarchy may not be applicable for the specific material.
  
  Configuration Issues: There may be issues with the configuration settings in the system that prevent the hierarchy from being recognized or maintained.
  
  
  Solution:
  
  
  Maintain Hierarchy for the Material:
  
  Go to the relevant transaction (e.g., MM01 for creating materials or MM02 for changing materials).
  Enter the material number that is causing the