How to validate a text item/display item in Oracle forms 9i?

Hello Everyone,
I have a form in which we have to type in a product_id as shown below in the screenshot. And when we type in, it has to get validated.
If it is valid then ok, else display a message saying not valid.
How do we achieve it on a text box/diaply item in the form shown below.
Any kind of help would be really appreciated.
Thanks in advance,
Vishal

Just create a when-validate-item trigger for that text item and write the code inside to validate it.
Hope it helps.
Navnit

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How to validate a text item/display item in Oracle forms 9i?

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