How To Fix MD301 - Choose a valid field

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 301

• Message text: Choose a valid field

What causes this issue?

No pegging can be displayed for the available capacity of the work
center.
Pegged capacities can be dispalyed for the total capacity requirement
of the work center or for the material's capacity requirements.

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?

By double clicking on the following fields:
total requirements or
material,
you can access the function <ZH>Display pegged capacity</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MD301 - Choose a valid field ?

  The SAP error message MD301 "Choose a valid field" typically occurs in the context of Material Requirements Planning (MRP) or when working with the MRP-related transactions in SAP. This error indicates that the system is expecting a valid field input, but the input provided does not meet the criteria or is not recognized as valid.
  Causes:
  
  Invalid Field Selection: The user may have selected a field that is not applicable for the operation being performed.
  Data Entry Error: There may be a typographical error or incorrect data format in the field.
  Configuration Issues: The system configuration may not support the field being used, or the field may not be activated in the current context.
  Authorization Issues: The user may not have the necessary authorizations to access certain fields or data.
  
  Solutions:
  
  Check Field Selection: Ensure that the field you are trying to use is valid for the transaction or operation you are performing. Refer to the documentation or help text for guidance on valid fields.
  Correct Data Entry: Double-check the data you have entered for any typos or formatting issues. Ensure that the data type matches the expected input (e.g., numeric, alphanumeric).
  Review Configuration: If you have access, check the configuration settings in the SAP system to ensure that the field is properly set up and activated for the relevant transactions.
  Consult with IT Support: If the issue persists, it may be necessary to consult with your SAP support team or IT department to investigate any underlying configuration or authorization issues.
  Use Help Functionality: Utilize the F1 help functionality in SAP to get more information about the field and its requirements.
  
  Related Information:
  
  Transaction Codes: The error may occur in various transaction codes related to MRP, such as MD01 (MRP Run), MD02 (MRP for Single Material), or MD04 (Stock/Requirements List).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide specific guidance or fixes for known problems.
  User Documentation: Refer to user manuals or training materials specific to your organization’s SAP implementation for additional context on valid fields and their usage.
  
  If you continue to experience issues, providing specific details about the transaction you are attempting and the fields involved can help in diagnosing the problem further.