Not familiar with "SID"s - are they Service Information Digests?
If so - they are often optional information - borne from in-service information received by the manufacturer. Compliance could depend on the age of the aircraft or the operational use of the aircraft.
If it was a new aircraft the manufacturer could stipulate that warranty could be affected by non-compliance with their Service Bulletins, Letters and Digests.
Also, if the aircraft is operated in a way mentioned in the Digest (e.g. Flight over water, etc.) this too could affect the way the manufacturer supports the operator/type.
Hope this helps
Rigga