How To Fix NP231 - Field name & is reserved (Structure cannot be used as append in DB table)

NP231 - Overview

• Message type: E = Error

• Message class: NP - New checks in the activating program

• Message number: 231

• Message text: Field name & is reserved (Structure cannot be used as append in DB table)

What causes this issue?

In an append structure, you are using a field name which is reserved
for the database.

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?

This will not result in an error as long as you do not use the
structure as an append structure in a database table.
You may not use the table as an append structure in a new database
table and may not use it as a new append structure for a database table
which is already active.
The table activation program rejects it because use of this database
table can cause errors, depending on the database system.
A warning is given for tables which are already active having such an
append structure.

Error message extract from SAP system. Copyright SAP SE.

NP231 - Details

• The SAP error message NP231 indicates that a field name you are trying to use in a structure is reserved and cannot be used as an append in a database table. This typically occurs when you are trying to append a structure to a database table, and one of the fields in that structure has a name that is reserved by the SAP system.
  
  Cause:
  
  Reserved Field Names: SAP has a set of reserved field names that cannot be used in custom developments. These names are often used by the system for internal purposes.
  Field Naming Conventions: The field names in your structure may not comply with SAP's naming conventions, which can lead to conflicts.
  Existing Fields: If the field name you are trying to use already exists in the database table or is part of the standard SAP structure, it will cause this error.
  
  
  Solution:
  
  Rename the Field: The most straightforward solution is to rename