Fixing of subsequent columns also canceled

What causes this issue?

You are editing the column elements of a table control and canceled the
"Fixed column" attribute for a column.
There are column elements with higher column numbers that are fixed.

System Response

Only a connected starting area of columns of a table control can be
fixed. The system therefore automatically cancels the fixing of columns
with higher column numbers.

How to fix this error?

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.