The program <&1> contains no executable unit tests; see long text

What causes this issue?

The active version of the program does not contain any <DS>
<DS:TX.SAUNIT_EXECUTABLE_UNIT_TEST>executable</></> unit test.

How to fix this error?

Check if the test class satisfies the criteria to be an executable unit
test. In case the test class satisfies all criteria but you get this
message activate the program again.


&FURTHER_HINTS&
See <DS><DS:ABEN.ABAP_UNIT_GLOSRY>ABAP Unit</></> documentation.

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.