Dear,
For each client we have created the following Request types:
Request type: Issue type:
Remedial Maintenance - Incident Incident
Remedial Maintenance - Problem Problem
General Support - Service Request Service Request (based on Change Request)
General Support - Change Request Change Request (already existed)
Request a new account Access
Our clients are not able to create a 'General Support - Service Desk' ticket. This type of ticket was created by creating the Request type 'General Support - Service Request' and selecting 'Service Request' as its Issue type.
I assume there is something which makes this not sufficient for our clients to create this kind of ticket. Do you know why this is?
We receive the following error:

They are able to create a Change Request, which already existed in the list when you navigate to Project > Project Settings > Request types
We also receive the same error message for the following Request type that I created:
Request type: Issue type:
Managed Services Service Request
The Issue type 'Service Request' is also used for the Request type 'General Support - Service Request'.
What do we need to do in order for our clients to be able to make a ticket with these Request types and with Issue type 'Service Request'?
This relates to the following question:
When I (Admin) create a Jira ticket for client (specific project), client can't see the content
This is very urgent for our clients.
Thank you in advance for your help!