Populating Multiple Costing Lines with API

Good Afternoon!

I have an API that I want to use to populate more than one line of costing. The API seems to work without error but when accessing record I get the following:

And this is what the record looks like:

How does the first record work great but others do not? They are the same field structure as the first one.

I have the below procedure for each costing entry:

PROCEDURE CREATE_COSTING_RECORD1 (pLogFile IN UTL_FILE.FILE_TYPE)  IS

 -- Create Costing Record

     l_combination_name        varchar2(100);

     l_cost_allocation_id       number;

     l_cost_effective_start_date    date;