How To Fix MJ007 - Field & has not been registered as modifiable

SAP Error Message - Details

• Message type: E = Error

• Message class: MJ - Field Selection

• Message number: 007

• Message text: Field & has not been registered as modifiable

What causes this issue?

This field has not been declared modifiable.

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?

Go back to the screen listing all modifiable fields and add this new
modifiable field to the list. It is then assigned a unique number that
the system later copies to field <LS>Screen-Group1</> in the screen
groups concerned (when the screens are generated after you save your
field selection maintenance work).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MJ007 - Field & has not been registered as modifiable ?

  The SAP error message MJ007, which states "Field & has not been registered as modifiable," typically occurs in the context of the Material Management (MM) module, particularly when dealing with material master data or inventory management. This error indicates that a specific field in the system is not set up to allow modifications, which can be due to various reasons.
  Causes:
  
  Field Configuration: The field in question may be configured in such a way that it is not allowed to be modified after certain conditions are met (e.g., after a material has been posted to inventory).
  Status of the Material: The material might be in a status that restricts changes, such as being locked for changes or being in a closed period.
  User Authorizations: The user may not have the necessary authorizations to modify the field in question.
  Customizations: Custom developments or enhancements may have been implemented that restrict modifications to certain fields.
  
  Solutions:
  
  Check Field Configuration: Review the configuration settings for the material master or the specific field in question. This can be done in the SPRO transaction under the relevant MM settings.
  Review Material Status: Check the status of the material. If it is locked or in a closed period, you may need to unlock it or open the period for changes.
  User Authorizations: Ensure that the user has the necessary authorizations to modify the field. This can be checked in the user roles and profiles.
  Consult with Technical Team: If there are custom developments, consult with your technical team to understand if there are any restrictions placed on the field and if they can be modified.
  Use Transaction Codes: Use transaction codes like MM02 (Change Material) to attempt to change the material and see if the error persists. If it does, it may provide more context on the specific field causing the issue.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review SAP documentation for the MM module to understand the implications of field modifiability and the lifecycle of material data.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.