Validate element entry at Element Entry Screen and BEE

Question

Hi,
I would like to incorporate some validation at both the Element Entry screen and Batch Element Entry.
The validation rule is user is only allow to enter one element between Element A and Element B, they are mutually exclusive.
1) When user enter Element A, Element B should not exist in Element Entry screen.
2) When user enter Element B, Element A shoudl not exist in Element Entry screen.
The entry point for the element can be done via
1) loading via BEE screen
2) entry via Element Entry screen
Thus, the validation rules should apply at both the entry point.
I have tried to used the user hook via the pay_element_entry_api, however, it is not working (meaning no validation take place).
And I also notice that the form PAYWSMEE.fmb is not using the pay_element_entry_api but is using hr_entry_api.
Appreciate advise on this as this validation is really important to the clietn to ensure correct payment.
Thanks,
ShiauChin

Answer 1

Thanx Sharath for your quick response.
But I have run QuickPay for that employee.
After running QuickPay the input values names are coming into element entry value screen.
But it is not showing the value corresponding to the element input value names.
Thanks,
Pankaj Kedia