Custom function to lookup from another module

The code works when executed manually.

But does not work when set with workflow rule as when a new quote is created?

what am I missing?

accDetails = zoho.crm.getRecordById("Accounts",accidtoLong());

mp = Map();

mp.put("Shipping_Street",ifnull(accDetails.get("Shipping_Street"),""));

mp.put("Shipping_City",ifnull(accDetails.get("Shipping_City"),""));

mp.put("Shipping_Country",ifnull(accDetails.get("Shipping_Country"),""));

mp.put("Shipping_State",ifnull(accDetails.get("Shipping_State"),""));

updateResp = zoho.crm.updateRecord("Quotes",quoteId.toLong(),mp);

info mp;

info updateResp;