Deal Approval Histories REST Endpoints

Deal Registrations/Deal Approval Histories
The deal registration approval history lets you access a comprehensive record of approval-related information associated with the deal, encompassing the names of approvers, action dates, and the specific actions taken.
Get all approval history records
Method: get
Path: /crmRestApi/resources/11.13.18.05/deals/{dealsUniqID}/child/DealApprovalHistory
Get an approval history record
Method: get
Path: /crmRestApi/resources/11.13.18.05/deals/{dealsUniqID}/child/DealApprovalHistory/{VersionKey}