How To Fix PE201 - Requirements source is not known

PE201 - Overview

• 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.

Unfortunately, there isn't any extra information in this error notice.

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PE201 - Details

• 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