How To Fix USMDZ009 - Optional key fields not allowed for this scenario

SAP Error Message - Details

• Message type: E = Error

• Message class: USMDZ - Nachrichten für MDGF Datenmodell (ohne Validierung)

• Message number: 009

• Message text: Optional key fields not allowed for this scenario

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 USMDZ009 - Optional key fields not allowed for this scenario ?

  The SAP error message USMDZ009 indicates that optional key fields are not allowed for the specific scenario you are working with in the SAP Master Data Governance (MDG) environment. This error typically arises when you are trying to create or change master data and have included fields that are marked as optional in a context where they are not permitted.
  Cause:
  
  Incorrect Field Configuration: The fields you are trying to use may be configured as optional in the data model, but the specific scenario (like a certain workflow or process) does not allow optional fields.
  Data Model Restrictions: The data model may have restrictions that require certain fields to be mandatory for the specific operation you are performing.
  Validation Rules: There may be validation rules in place that enforce the requirement of certain fields being filled out, even if they are marked as optional in other contexts.
  
  Solution:
  
  Review Data Model Configuration: Check the configuration of the data model in the MDG system to ensure that the fields you are using are correctly set up for the scenario you are working with. You may need to adjust the field settings to align with the requirements of the scenario.
  Mandatory Fields: Ensure that all mandatory fields are filled out in your data entry. If the scenario requires certain fields to be filled, make sure they are not left blank.
  Consult Documentation: Refer to the SAP MDG documentation for your specific version to understand the requirements and restrictions for the scenario you are working with.
  Error Handling: If you are developing or customizing the MDG application, ensure that your error handling logic correctly identifies and manages optional fields based on the scenario.
  Testing: After making changes, test the scenario again to ensure that the error does not reoccur.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context on the configuration of optional fields in your version of SAP MDG.
  Community Forums: Engage with SAP community forums or support channels where other users may have encountered similar issues and can provide insights or solutions.
  Training and Documentation: Consider reviewing training materials or documentation related to SAP MDG to better understand how to manage master data and the implications of field configurations.
  
  By addressing the configuration and ensuring compliance with the scenario requirements, you should be able to resolve the USMDZ009 error.