FRM-41051 when using LOVs

I have a form that has LOVs and they work fine when querying data.  However now I need to modify the form to also use the LOVs in order to add a record as the data I'm adding uses these fields to build another field.  The form has datablocks for a view (master) for Positions and a table for Budget Control (basically a 1-to-1 relationship).  A position needs a Budget Control Number (BCN) before it can be created.  The BCN is comprised of...

<Cost Center org_id><Job Code>-<sequence#>

I have LOVs for Cost Center, Job Code, & Job Title (both Job LOVs return the same Job data, just looking up by either code or description).