"unsupported construct or internal error"

Question

I'm trying to call a procedure (via a concurrent request) using the FND_REQUEST.SUBMIT_REQUEST procedure in a WHEN-BUTTON-PRESSED trigger in my form and I keep getting an error when I try to compile the trigger code:
Error 707 at line 1, column 1
unsupported construct or internal error [2601]
Below is the part of the code that is causing the problem (the call to the FND_REQUEST package). It will compile if I replace the "chr(0)" at the end of the parameter list with 80 or so "" (null) parameters to match the number of arguments specified in the SUBMIT_REQUEST procedure. But, this should not be necessary and causes problems then, b/c the procedure that is being called errors out with an error of "wrong number or types of arguments in call". This compiles fine with the chr(0) if i compile this type of construct in a database procedure. But, forms (6i) won't let me.
This is very frustrating. Is there any way around this?
     v_req_id := FND_REQUEST.SUBMIT_REQUEST('XXROT','BHR_INV','',
                                                  '',FALSE,     v_no_param,v_trx_date_param,v_org_param,v_print_type,v_cust_param,v_trx_source_param,v_sort,v_email_cust,chr(0));

Answer 1

I don't know the fnd_request.submit_request procedure, but i think the problem is related to a bug in forms 6i. If you call a stored procedure which has an optional date parameter, without supplying this parameter, then you will get this error.
Include the default value explicitly in your call, and your problem should go away.