How To Fix W8108 - Source & corresponds to object type & and not &

W8108 - Overview

• Message type: E = Error

• Message class: W8 - Workflow: Expressions, data flow

• Message number: 108

• Message text: Source & corresponds to object type & and not &

What causes this issue?

The two partners of the value assignment in a binding definition must
be defined by <ZH>identical data types</> or at least <ZH>compatible
data types</>.
Data types which are expressed via a <ZH>field reference</> are
"compatible" if the source element is shorter than the target element
for the same data type.
Data types which are expressed via an <ZH>object reference</> are
compatible:
if no object type is explicitly specified for the target element
(assignment: specified object reference ==> unspecified object
reference)
if the source element references a subtype of the object type which is
referenced by the target element
(assignment: object reference subtype ==> object reference supertype)

How to fix this error?

You should use F4 input help for the binding definition.
You should only select container elements which F4 input help shows
have the following characteristics: "Data type identical" or
"Compatible".
Refer to the color key!

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

INCLUDE NA_WF_FARBLEGENDE OBJECT DOKU ID TX

Error message extract from SAP system. Copyright SAP SE.

W8108 - Details

• Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  W8108: Source & corresponds to object type & and not &
  
  Meaning / 
  Cause:
  This warning message occurs when there is a mismatch between the object type of a source object and the expected object type in a particular SAP transaction or process.
  
  The message indicates that the source object you are trying to use or reference corresponds to a certain object type (the first &), but the system expected it to be of a different object type (the second &).
  This usually happens in scenarios involving object linking, assignment, or referencing, such as in Asset Accounting, Document Management System (DMS), or other modules where objects are linked by type.
  For example, you might be trying to assign a document or asset that is of type "Material" but the system expects an object of type "Equipment".
  
  
  Typical Scenarios:
  
  Assigning or linking objects in Asset Accounting (e.g.,