Type conflict when calling a FORM

Hi,

when we have callled function module "PYXX_READ_PAYROLL_RESULT" in out HR-ABAP program then shows the short dump as:

procedure "PYXX_READ_PAYROLL_RESULT" "(FUNCTION)", nor was it propagated by

RAISING clause.

Since the caller of the procedure could not have anticipated that the

exception would occur, the current program is terminated.

The reason for the exception is:

Call to FORM "IMPORT_RESULT" is incorrect:

The actual parameter no. 2 has a different data type in the

PERFORM than requested for the FORM "IMPORT_RESULT" in program "%_T02E40".

Please provide the solution any one.

regards,