How To Fix SMT147 - A variable with incorrect category was assigned to parameter &1

SAP Error Message - Details

• Message type: E = Error

• Message class: SMT -

• Message number: 147

• Message text: A variable with incorrect category was assigned to parameter &1

What causes this issue?

A variable was transferred to parameter &V1& of class CL_SMT_ENGINE
(method EXECUTE or PREFETCH) and the category of this variable differs
from Customizing of the mapping step.

System Response

Processing was terminated.

How to fix this error?

Note that the category of the source and target structures is specified
in Customizing of the mapping step. Usually, the error arises because
the mapping tool has been called up incorrectly. That is, the user has
given an incorrect variable to an input parameter.

Procedure for System Administrators

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.