How To Fix DS161 - Program type changed from type &1 to type &2

DS161 - Overview

• Message type: E = Error

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

• Message number: 161

• Message text: Program type changed from type &1 to type &2

What causes this issue?

You tried to change the program type to or from "Executable program
(type 1)" or "Include program (type I)".
This can affect other program attributes, and possibly the entire
program structure.
The following attributes only apply to executable programs:
Logical database
Selection screen version
Include programs may not contain the following:
Text elements
User interface elements (screens and menus)
Documentation
Variants.

System Response

If the previous program type was "Executable program", the attributes
listed above will be lost when you save.
If the new program type is "Include program", text elements, and the
other elements listed above, will be deleted when you save.

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.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DS161 - Program type changed from type &1 to type &2 ?

  The SAP error message DS161, which states "Program type changed from type &1 to type &2," typically occurs in the context of data transfer or data processing within SAP systems, particularly when dealing with DataStore Objects (DSOs) or InfoProviders in SAP BW (Business Warehouse).
  
  Cause:
  This error usually arises when there is a mismatch in the data types or structures between the source and target objects during data loading or transformation processes. Specifically, it indicates that the program or data structure has been altered in a way that is incompatible with the expected data type. This can happen due to:
  
  Changes in Data Model: If the data model has been modified (e.g., changing the data type of a field in the DSO or InfoObject), it can lead to this error.
  Inconsistent Data Types: If the source data type does not match the target data type, the system will throw this error.
  Transport Issues: If changes