When clicking the Gear icon (Setup) in Salesforce, the 'Service Setup' option may not appear in the dropdown menu. This occurs because 'Service Setup' requires at least one of the following Permission Set Licenses to be assigned to the org: Sales User Permission Set License (SalesUserPsl), Service User Permission Set License (ServiceUserPsl), or CRM User Permission Set License (CRMUserPsl). If none of these licenses are present, the Service Setup option will not be visible.
This can be fixed by adding the following licenses:
000380433

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