If the API is executed successfully, here is the description of response attributes, which returns to the form of JSON.
|message||Staff added to event -> In permissions select Staff.|
Admin updated for event -> In permission select Admin
Here are the possible error messages, which return if any condition gets failed or required data is missing for processing.
|Error code||Error Description|
|4090121||User has already logged in at website. Can't change email now!|
|4090110||You have already added this team member.|
|4090120||This email address is already assigned. You can not change existing staff with this email address.|
|4060026||Cannot make last event admin as staff.|
|4060044||Cannot make last event Exhibitor Admin as Lead Retriever.|