How can I handle error in my apex form

Hi experts,

I designed a form where I save the values. I have a button create and when I press on it, without going into all the values I got the following error. How can I manipulate Tah error so that if I don't get all the values I have error by displaying a message asking the user to enter values

ORA-01400: cannot insert NULL into ("LOTTO_BI". "" "" HOURLY_SALES '. "" ACT_AMT')
Error failed to process row in the HOURLY_SALES table.

As far as I understand your problem simply to add validation to your processing of the page.
In the third step, when you create a validation, you can choose "non-null Item.

Tags: Database

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