How To Fix PE201 - Requirements source is not known

SAP Error Message - Details

• Message type: E = Error

• Message class: PE - Shift Planning: Messages

• Message number: 201

• Message text: Requirements source is not known

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message PE201 - Requirements source is not known ?

  The SAP error message PE201, which states "Requirements source is not known," typically occurs in the context of the SAP system when there is an issue with the configuration or data related to the requirements planning process. This error is often encountered in the context of Material Requirements Planning (MRP) or Production Planning (PP) modules.
  Causes of PE201 Error
  
  
  Missing or Incorrect Master Data: The material master data may not be properly maintained. This includes missing planning data or incorrect settings in the material master record.
  
  
  Incorrect MRP Type: The MRP type assigned to the material may not be appropriate for the planning process being executed.
  
  
  Missing BOM or Routing: If the material is part of a Bill of Materials (BOM) or routing that is not defined or is incomplete, the system may not be able to determine the requirements source.
  
  
  Configuration Issues: There may be issues with the configuration settings in the MRP or PP modules that prevent the system from identifying the requirements source.
  
  
  Data Inconsistencies: There may be inconsistencies in the data that prevent the system from processing the requirements correctly.
  
  
  Solutions to PE201 Error
  
  
  Check Material Master Data:
  
  Go to the material master record (transaction code MM03) and ensure that all relevant views (MRP, Basic Data, etc.) are correctly filled out.
  Verify that the MRP type is appropriate for the material.
  
  
  
  Review BOM and Routing:
  
  Ensure that the BOM and routing for the material are correctly defined and active. You can check this using transaction codes CS03 (for BOM) and CA03 (for routing).
  
  
  
  Check MRP Configuration:
  
  Review the MRP configuration settings in the system to ensure they are set up correctly. This can be done through transaction codes OMD0 (for MRP settings) and OMD1 (for MRP group settings).
  
  
  
  Run MRP Again:
  
  After making the necessary corrections, run the MRP process again to see if the error persists.
  
  
  
  Check for Data Inconsistencies:
  
  Use transaction code SE38 to run reports that can help identify inconsistencies in the data that may be causing the error.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  
  
  
  Related Information
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM03 (Material Master), CS03 (BOM), CA03 (Routing), and MD01 (MRP Run).
  MRP Types: Understand the different MRP types (e.g., PD, VB, ND) and their implications on planning.
  SAP Documentation: Refer to SAP Help documentation for detailed explanations of MRP processes and configuration settings.
  User Forums: Engage with SAP community forums or user groups for shared experiences and solutions related to this error.
  
  By following these steps, you should be able to identify and resolve the cause of the PE201 error in your SAP system.