- Charact. &3 &2: Define variable &1 first

What causes this issue?

The value of characteristic &V3& &V2& contains variable &V1&.
The variable has not been defined in the preceding process instruction.
However, you can only use a variable in a characteristic value if it
has been defined in a preceding process instruction for the same
control recipe destination or PI sheet.

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?

Define variable &V1& in one of the preceding process instructions.

Error message extract from SAP system. Copyright SAP SE.