How To Fix PR028 - Enter MRP controllers

SAP Error Message - Details

• Message type: E = Error

• Message class: PR - Forecast: Help messages

• Message number: 028

• Message text: Enter MRP controllers

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message PR028 - Enter MRP controllers ?

  The SAP error message PR028, which states "Enter MRP controllers," typically occurs in the context of Material Requirements Planning (MRP) when the system requires the specification of MRP controllers for certain materials or planning scenarios. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Missing MRP Controller: The MRP controller field is mandatory for certain transactions or processes in SAP, and if it is not filled in, the system will generate this error.
  Configuration Issues: The MRP controller may not be defined in the system for the materials being processed.
  Material Master Data: The material master records may not have the MRP controller assigned, which is necessary for MRP processing.
  
  Solution:
  
  
  Enter MRP Controller:
  
  Navigate to the relevant transaction (e.g., MD01 for MRP run).
  Ensure that the MRP controller field is filled in. You can enter the appropriate MRP controller code that corresponds to the materials being planned.
  
  
  
  Check Material Master:
  
  Go to the Material Master (transaction MM02).
  Check the MRP 1 view for the material in question.
  Ensure that the MRP controller is assigned. If it is missing, you can add it and save the changes.
  
  
  
  Define MRP Controllers:
  
  If the MRP controller does not exist, you may need to define it in the system.
  Use transaction OMD0 to define MRP controllers. Ensure that the controller is properly configured with the necessary parameters.
  
  
  
  Review MRP Configuration:
  
  Check the overall MRP configuration in the system to ensure that all necessary settings are in place.
  Use transaction SPRO to access the configuration settings and navigate to the MRP section.
  
  
  
  Related Information:
  
  MRP Controller Role: The MRP controller is responsible for managing the planning and procurement of materials. It is essential for ensuring that the right materials are available at the right time.
  Material Master Views: The MRP controller is part of the MRP views in the material master, which include various parameters that influence how MRP runs for that material.
  Documentation: Refer to SAP Help documentation for detailed information on MRP controllers and their configuration.
  
  By following these steps, you should be able to resolve the PR028 error and ensure that your MRP processes run smoothly. If issues persist, consider consulting with your SAP support team or a functional consultant for further assistance.