How To Fix MD311 - Period & was not found

SAP Error Message - Details

• Message type: E = Error

• Message class: MD - Material Requirements Planning (MRP)

• Message number: 311

• Message text: Period & was not found

What causes this issue?

The period specified does not exist in the period of evaluation.

System Response

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

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MD311 - Period & was not found ?

  The SAP error message MD311 ("Period & was not found") typically occurs in the context of Material Requirements Planning (MRP) or when dealing with planning data in SAP. This error indicates that the system is unable to find the specified period in the planning data for a material.
  Causes:
  
  Missing Planning Data: The specified period may not have any planning data available for the material in question.
  Incorrect Period Specification: The period specified in the transaction may be incorrect or not aligned with the planning calendar.
  Data Not Updated: The planning data may not have been updated or generated for the specified period.
  Period Locking: The period may be locked for planning or other activities, preventing access to the data.
  Configuration Issues: There may be configuration issues in the MRP settings or planning parameters.
  
  Solutions:
  
  Check Planning Data: Verify if the planning data exists for the specified period. You can do this by checking the material master or MRP views.
  Update Planning Data: If the planning data is missing, you may need to run the MRP process to generate the necessary planning data for the period.
  Verify Period Specification: Ensure that the period you are trying to access is correctly specified and falls within the valid range of periods defined in your planning calendar.
  Unlock Period: If the period is locked, you may need to unlock it or check with your SAP administrator to understand the reason for the lock.
  Review Configuration: Check the MRP configuration settings to ensure that they are set up correctly for the materials and periods you are working with.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like MD04 (Stock/Requirements List) or MD02 (MRP Run) to analyze and manage planning data.
  MRP Settings: Review the MRP settings in the material master (transaction MM03) and ensure that the planning parameters are correctly defined.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to the MD311 error message.
  User Authorization: Ensure that you have the necessary authorizations to access the planning data for the material in question.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or refer to SAP documentation for further troubleshooting steps.