In carrying out the tests, the tester shall strictly observe the manufacturer's handling, mounting, and connection instructions. Sequence A may be omitted if the module type has been tested according to IEC 61853-1. In this case the relevant test results from IEC 61853-1 shall be stated or referenced in the final report. For bifacial modules Sequence A cannot be omitted until IEC 61853-1 has been amended to take bifacial modules into account.