How To Fix SWF_EXP_001008 - System expression expected (expression '&1', position &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_EXP_001 - Expression Service Messages

• Message number: 008

• Message text: System expression expected (expression '&1', position &2)

What causes this issue?

The specified expression '&V1&' could not be interpreted as a system
expression.

System Response

The expression is not syntactically correct and cannot be processed.

How to fix this error?

Change the expression into a valid system expression. A system
expression begins and ends with the reserved character '%'. One of the
following expression types can be specified between these two
characters:
A field of the ABAP system table SYST. Example: %UZEIT% for component
SYST-UZEIT.
A workflow system expression, in other words, a component of the
workflow system element _WFSYST. Example: %_WFSYST.STRING.SPACE% for the
constant 'space'.
The call of a static method: %<class name>.<(>
<<)>method name> ( <parameter list> )%

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.