mediastreamvalidator error - advice if we can ignore this or not

Mediastreamvalidiator error:

all .m3u8 files relevant have already the REQ-VIDEO-LAYOUT="CH-STEREO" parameter set.

Nevertheless mediastreamvalidator check/reports for HLS Authoring Specification for Apple Devices states:

General requirements

Must Fix Issues

1. You MUST declare REQ-VIDEO-LAYOUT for variants containing other then standard monoscopic video

Variant #1