Transformation &1 has invalid runtime status and cannot be activated

What causes this issue?

Transformation &V1& has invalid runtime status and cannot be activated.

System Response

The runtime status of the transformation cannot be determined because it
contains a set of rules, which can be executed in ABAP runtime mode, and
another set of rules, which can be executed in HANA runtime mode. For
example:
ABAP routines (Start/End/Field) can only be processed in ABAP runtime.
AMDP Scripts (Start/End/Field) can only be processed in HANA runtime.
Master Data Lookup Rule, which are based on characteristics with
transitive attributes can only be processed in HANA runtime

How to fix this error?

You must delete either the set of rules whose runtime mode contradicts
the runtime mode of the other set of rules, or change the rules
accordingly so that they no longer contradict the runtime mode of the
other set.

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.