Clarification on working with related tables in existing feature services

[RobertBlash_HMM]

Based on the info I've found, when building surveys from existing feature services using relationships, the GlobalID must be used for the relationship. I want to make sure I'm setting up my feature services properly, can you confirm James Tedrick‌  (see attachment)?

Are there any other caveats or best practices to follow?

[JohnathanHasthorpe]

Hi Robert

This is correct. Please see the following for full feature service requirements: Use Survey123 with existing feature services—Survey123 for ArcGIS | ArcGIS .

When you publish the service, enable sync - this is a good test to make sure the feature service is correctly configured.

Thanks

John