How To Fix TPDA161 - No column in table &1 can be changed

TPDA161 - Overview

• Message type: E = Error

• Message class: TPDA - Debugger

• Message number: 161

• Message text: No column in table &1 can be changed

What causes this issue?

Only table columns of a single type (C,I,...) or strings can be changed
in the table directly.

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?

For columns containing objects, data references, structures or tables,
double-click to navigate to the respective detailed view, where you can
then make the changes.

Error message extract from SAP system. Copyright SAP SE.

TPDA161 - Details

• The SAP error message TPDA161 ("No column in table &1 can be changed") typically occurs when you attempt to modify a database table in a way that is not allowed by the system. This can happen for several reasons, and understanding the cause is essential for finding a solution.
  Causes:
  
  Table Type: The table you are trying to modify may be a pooled or cluster table, which has restrictions on certain types of changes.
  Field Attributes: The fields in the table may have attributes that prevent them from being changed, such as being part of a primary key or having a specific data type that does not allow modification.
  Database Constraints: There may be constraints or dependencies in the database that prevent changes to the table structure.
  Transport Requests: If you are trying to transport changes to a table structure, the transport request may not be correctly configured or may not include the necessary objects.
  
  Solutions:
  
  Check