How To Fix MD301 - Choose a valid field

MD301 - Overview

• 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.

MD301 - Details

• 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