This API gets the URL of the add comments page for the given approval request. This API accepts the approval request object as input parameter. 

APISignature
getAddCommentPageUrlwebService static String getAddCommentPageUrl(Apttus_Approval__Approval_Request__c requestSO)
Request Parameters
NameTypeRequired?Description

Approval_Request__c requestSO

ObjectYesThe approval request object.
Response Parameter
NameTypeDescription
addCommentPageURLStringThe URL of the add comment page.