InfallibleTechie

How get the Approval Process Id using Process Instance Step or Approval History in Salefsorce?

1. Get the ProcessInstanceId.

SELECT Id, ProcessInstanceId 
FROM ProcessInstanceStep 
WHERE Id = '<Id Of the Process Instance Step>’'

2. ProcessDefinitionId is the id of the Approval Process.

SELECT Id, TargetObjectId, ProcessDefinitionId 
FROM ProcessInstance 
WHERE Id = '<ProcessInstanceId>'

From the Approval History, open the Process Instance Step and get the Id.