When mapping test results to test cases in Testlab test cases are set with a mapping identifier for which the results are mapped against. By entering a value to this setting the constructed mapping identifiers for TAP results are prefixed with this value.
For example, when this option is entered with value "automated." and the tests are in a file named as "my-tests.tap" the mapping identifiers for
1..2 ok 1 first test not ok 2 second test
are structured as follows (Include TAP file name in mapping identifier: Yes, Include test number from mapping identifier: No):