How To Fix AD603 - Do not change field 'TABNAME'

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 603

• Message text: Do not change field 'TABNAME'

What causes this issue?

The first key field in a pool must always be a field TABNAME.

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

System Response

How to fix this error?

Check whether the spelling is correct or define a field TABNAME
CHAR(10).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD603 - Do not change field 'TABNAME' ?

  The SAP error message AD603 ("Do not change field 'TABNAME'") typically occurs in the context of ABAP development, particularly when working with database tables or structures. This error indicates that there is an attempt to modify the field TABNAME, which is a reserved field in certain contexts, such as when dealing with table definitions or data dictionary objects.
  Cause:
  
  Modification of Reserved Fields: The error is triggered when there is an attempt to change the value of the TABNAME field in a context where it is not allowed. This field is often used internally by SAP to identify database tables and should not be altered by developers.
  Incorrect Use of Data Dictionary Objects: If you are trying to manipulate a table or structure in a way that violates SAP's rules for data dictionary objects, this error can occur.
  
  Solution:
  
  Review Your Code: Check the ABAP code or the data dictionary object where the error is occurring. Ensure that you are not trying to modify the TABNAME field directly.
  Use Appropriate Methods: If you need to work with table names or structures, use the appropriate methods or functions provided by SAP. Avoid direct manipulation of reserved fields.
  Check for Custom Code: If you are working with custom code or enhancements, ensure that they do not inadvertently modify reserved fields.
  Consult Documentation: Refer to SAP documentation or the ABAP programming guidelines for best practices regarding data dictionary objects and reserved fields.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific guidance or updates related to this error message. SAP frequently updates its knowledge base with solutions to common issues.
  ABAP Development Guidelines: Familiarize yourself with the ABAP development guidelines to avoid common pitfalls when working with database tables and structures.
  Data Dictionary (SE11): Use transaction SE11 to review the structure of the table or data dictionary object you are working with. This can help you understand the context in which the error is occurring.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting with an experienced ABAP developer for further assistance.