How To Fix AXT_MODEL277 - Reserved field quota has been exceeded

SAP Error Message - Details

• Message type: E = Error

• Message class: AXT_MODEL -

• Message number: 277

• Message text: Reserved field quota has been exceeded

What causes this issue?

You have generated a table enhancement and selected the <LS>Enable
Stacked Extensibility</> checkbox.
During generation, a part of the remaining table space has been reserved
for customer field enhancements and another part for you to add
additional fields.
Now, you have added additional fields to the table and the reserved
quota has been exceeded.

System Response

The generation of the enhancement is not possible.

How to fix this error?

Consider removing field from the table. If the fields are required, the
reserved quota has to be reduced. In that case, contact the SAP support.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AXT_MODEL277 - Reserved field quota has been exceeded ?

  The SAP error message AXT_MODEL277, which states that the "Reserved field quota has been exceeded," typically occurs in the context of SAP applications that utilize the ABAP programming language and data model. This error indicates that the system has reached the limit of reserved fields that can be used in a particular context, such as a data model or a specific transaction.
  Cause:
  
  Field Quota Limit: Each data model or transaction in SAP has a predefined limit on the number of reserved fields that can be utilized. When this limit is exceeded, the system generates this error.
  Custom Development: If there are custom developments or enhancements that add additional fields to a data model, it may lead to exceeding the reserved field quota.
  Configuration Issues: Incorrect configuration or settings in the data model can also lead to this error.
  
  Solution:
  
  Review Data Model: Check the data model or transaction where the error occurred. Identify the number of reserved fields being used and see if any can be removed or optimized.
  Custom Fields: If custom fields have been added, consider whether all of them are necessary. Remove any fields that are not in use.
  Increase Quota: In some cases, it may be possible to increase the reserved field quota through configuration settings. Consult with your SAP Basis or technical team to explore this option.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates that can resolve the issue.
  Consult Documentation: Review the official SAP documentation for the specific module or application you are working with to understand the limitations and best practices regarding reserved fields.
  
  Related Information:
  
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  System Logs: Check system logs (transaction SM21) for additional error messages or warnings that may provide more context about the issue.
  Performance Impact: Be aware that excessive use of reserved fields can impact system performance, so it's essential to optimize the data model where possible.
  
  By following these steps, you should be able to identify the cause of the AXT_MODEL277 error and implement a suitable solution.