How To Fix MPN02021 - &1 has an invalid MRP type (&3) in plant &2

SAP Error Message - Details

• Message type: E = Error

• Message class: MPN02 - MPN Message: Materials Planning

• Message number: 021

• Message text: &1 has an invalid MRP type (&3) in plant &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MPN02021 - &1 has an invalid MRP type (&3) in plant &2 ?

  The SAP error message MPN02021 indicates that there is an issue with the Material Requirements Planning (MRP) type assigned to a material in a specific plant. The error message format is as follows:
  
  &1: Material number
  &2: Plant
  &3: Invalid MRP type
  
  Cause
  The error occurs when the MRP type assigned to a material is not valid for the specified plant. This can happen due to several reasons:
  
  Incorrect MRP Type Assignment: The MRP type assigned to the material may not be defined in the system for the specified plant.
  Data Migration Issues: If data was migrated from another system or if there were changes in configuration, the MRP type might not have been updated correctly.
  Configuration Changes: Changes in the configuration of MRP types or plants may lead to inconsistencies.
  Material Master Data Issues: The material master data may not be correctly maintained, leading to invalid entries.
  
  Solution
  To resolve the error, you can follow these steps:
  
  
  Check MRP Type Configuration:
  
  Go to the configuration settings in SAP (Transaction code: SPRO).
  Navigate to the MRP settings and verify that the MRP type in question is defined for the plant in question.
  
  
  
  Review Material Master Data:
  
  Use transaction code MM03 to display the material master data for the affected material.
  Check the MRP views (MRP 1, MRP 2, etc.) to see the assigned MRP type.
  If the MRP type is incorrect, you can change it using transaction code MM02.
  
  
  
  Validate Plant Settings:
  
  Ensure that the plant settings are correctly configured to support the MRP type assigned to the material.
  Check if the plant is active and properly set up in the system.
  
  
  
  Consult Documentation:
  
  Review any documentation or notes related to MRP types and their usage in your specific SAP version.
  
  
  
  Test Changes:
  
  After making any changes, test the MRP run or transaction that triggered the error to ensure that the issue is resolved.
  
  
  
  Related Information
  
  MRP Types: MRP types determine how materials are planned in SAP. Common MRP types include PD (MRP), VB (Reorder Point Planning), and others.
  Transaction Codes:
  
  MM01: Create Material
  MM02: Change Material
  MM03: Display Material
  SPRO: Customizing (Configuration)
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to MRP types and material planning.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or refer to SAP's official documentation for further assistance.