handle concurrent enrollments in the same season based on salesforce message and relay to client apps

[CritiqalPete]

1. in the future salesforce may block concurrent enrollment so be prepared to handle this gracefully
2. the client app will show a message warning the user of concurrent enrollment but presently there is no option to delete
3. we will determine what the client app should do in the future but expect the rules to finally reside on the DB

UAT Example:

1. Coach submits an enrollment for a student that is concurrently enrolled on the same or different team season
2. Salesforce responds with an error message: "Student already enrolled in in the same season"
3. API relays this message to the App
4. App relays a user-friendly message to let the user change the request

[CritiqalPete]

@za-zohaib FYI

[CritiqalPete]

@AleksandrMolchagin what's the status on this? Can we give you some test support/scenarios?