How To Fix W7021 - No hierarchy material found for material group &1

SAP Error Message - Details

• Message type: E = Error

• Message class: W7 - Message Class for Value-Only Based Inventory Management

• Message number: 021

• Message text: No hierarchy material found for material group &1

What causes this issue?

Inventory management is done at hierarchy material level. However,
no such level could be determined for material group &V1&.

How to fix this error?

Check whether an assignment to hierarchy material exists in your
plant for the material group of the entered material.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message W7021 - No hierarchy material found for material group &1 ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  W7021 No hierarchy material found for material group &1
  
  Meaning / Cause:
  This warning message indicates that the system could not find a material hierarchy assigned to the specified material group (the placeholder &1 is replaced by the actual material group number in the message). 
  Material hierarchies are used in SAP for reporting and classification purposes, especially in Sales and Distribution (SD) and Logistics Information System (LIS). They provide a structured way to group materials for analysis.
  If the material group does not have an assigned material hierarchy, certain processes or reports that rely on this hierarchy cannot function properly, hence the warning.
  
  Common Causes:
  
  The material group master data does not have a material hierarchy assigned.
  The material hierarchy master data is incomplete or missing.
  The material group is newly created but the hierarchy assignment was not maintained.
  Customizing settings for material groups and hierarchies are incomplete.
  
  
  Where it occurs:
  
  During sales order processing or delivery processing.
  When running LIS reports or other SD reports that use material hierarchies.
  In batch jobs or data extraction processes that require material hierarchy data.
  
  
  Solution / How to fix:
  
  
  Check Material Group Master Data:
  
  Go to transaction MM03 (Display Material).
  Check the material group assigned to the material.
  Note the material group number.
  
  
  
  Check Material Hierarchy Assignment:
  
  Use transaction SPRO to navigate to:
  Logistics - General > Material Master > Settings for Key Fields > Define Material Hierarchy
  Or directly check material hierarchy assignments via transaction MMH1 or MMH2 (depending on system version).
  Verify if the material group &1 has a corresponding material hierarchy assigned.
  
  
  
  Assign Material Hierarchy to Material Group:
  
  If missing, assign the appropriate material hierarchy to the material group.
  This can be done in customizing or via master data maintenance depending on system setup.
  
  
  
  Maintain Material Hierarchy Master Data:
  
  Use transaction MMH1 (Create Material Hierarchy) or MMH2 (Change Material Hierarchy) to create or update the hierarchy nodes.
  
  
  
  Check LIS Settings:
  
  If the error occurs during LIS reporting, ensure that the material hierarchy is properly maintained in LIS customizing.
  
  
  
  Re-run the process/report:
  
  After maintaining the hierarchy, re-run the process or report to confirm the warning no longer appears.
  
  
  
  
  Additional Information:
  
  Material Hierarchy is a key field in the material master used for reporting and grouping materials.
  Material groups are often used as a higher-level classification, but the system expects a hierarchy for detailed analysis.
  This warning does not usually stop the process but indicates incomplete master data which may affect reporting accuracy.
  If the material group is not intended to have a hierarchy, you may consider ignoring the warning, but it is better to maintain consistent master data.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error Message
  W7021 No hierarchy material found for material group &1
  
  
  Cause
  Material group &1 has no assigned material hierarchy
  
  
  Solution
  Assign a material hierarchy to the material group via customizing or master data maintenance
  
  
  Transactions
  MM03, MMH1, MMH2, SPRO (customizing)
  
  
  Impact
  Warning during sales or reporting processes; may affect LIS reports
  
  
  
  
  If you need specific steps for your SAP version or further assistance, please provide the context (e.g., transaction, module) where the error occurs.