Approved Revenue Budget API Error

Hi,
I am having trouble creating an Approved Revenue Budget (AR) using the create_draft_budget api. I could create Approved Cost (AC) budget, but not AR budget. I have checked the setups and everything looks fine.

I am including my script, please let me know if I need to pass any other values into the API. The api returns the following error message : "Budget Entry Method does not allow Burden Cost to be passed".

Thanks,
Srikanth

set serveroutput on size 20000

DECLARE

-- variables needed for API standard parameters
   l_api_version_number              NUMBER         := 1.0;
   l_commit                            VARCHAR2(1)    := 'F';
   l_return_status                  VARCHAR2(1);