Workflow Rules not Executed in API Call

Workflow Rules not Executed in API Call

I created an Accounts workflow rule to update a Deal record when an Account is created but when an Insert Account Record API ( https://crm.zoho.com/crm/private/xml/Accounts/insertRecords?...) call is made using webhook post the WorkFlow Rule is not executed. I am not sure why but I expect the workflow rule to be executed. Help!