This problem analyzer helps resolve issues for objects that have recordTypes for picklists where a picklist is not referenced in fields.
What triggers this problem analyzer?
This problem analyzer is triggered if you have an object with a picklist in recordTypes that has not been declared in fields. For example, in the recordType "RecordTypeWithMissingReference" the picklistValue "UnreferencedPicklist" (unlike "PicklistField__c"), has not been declared in the fields in the following object:
This problem is often because a picklist field was deleted on the source side and the record type was not updated.
What problem is it solving?
Salesforce needs to have the picklist referenced in recordTypes to be declared in fields otherwise it will fail validation and deployment with a message such as Global value set 'XXXX' in record type 'YYYY' on the entity 'ZZZZ' cannot be resolved.
How does it work?
Gearset will offer the option to remove the unreferenced picklist from the deployment from recordTypes. This will allow the validation or deployment to succeed.