How To Fix DS541 - All four column header lines are already in use

DS541 - Overview

• Message type: E = Error

• Message class: DS - Messages for Editing Text Elements in ABAP Programs

• Message number: 541

• Message text: All four column header lines are already in use

What causes this issue?

It is not possible to insert a blank line because all four column
header lines are already in use.

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?

Error message extract from SAP system. Copyright SAP SE.

DS541 - Details

• The SAP error message DS541, which states "All four column header lines are already in use," typically occurs in the context of SAP Data Services or when working with data extraction and transformation processes. This error indicates that the system has reached the limit of four column header lines that can be used in a particular context, such as a data flow or a data transformation.
  
  Cause:
  
  Column Header Limit: In SAP Data Services, there is a limitation on the number of column header lines that can be defined for a data flow or transformation. The system allows only four header lines, and if you attempt to add more, you will encounter this error.
  Data Flow Design: The design of your data flow may inadvertently include multiple transformations or joins that exceed the header line limit.
  Incorrect Configuration: There may be a misconfiguration in the data flow or job design that leads to the