Rel 19 cr0251 28.312 enhance the is unique property for stage 3 open api
requested to merge Rel_19_CR0251_28.312_Enhance_the_isUnique_property_for_stage_3_OpenAPI into Integration_Rel19_SA5_157_YAML
Rel 19 cr0251 28.312 enhance the is unique property for stage 3 open api