Control Mandatory fields on custom screen in Module pool program

Hello all,
I have developed a custom screen on which I have a table control with 5 fields. I wanted to make the first three fields mandatory. So instead of selecting the entry as "required" from the screen attributes for these input fields, I have looped at table screen in PBO and based on the screen name and screen group I have set the field screen-required = 1. By doing this, I could make these 3 fields mandatory.
Now, when I enter the data for the first line and press enter, it is asking me to fill the required fields in the second line and so on.How can I avoid this without having to remove the mandatory symbol in the subsequent lines?
There is an altenative way of achieving this by not making the fields mandatory on the screen but while saving we can check if the value is entered and raise a message. In this scenario the user would not know that they are obligatory fields until he hits save button.
For example, in standard transaction VK12, if we select condition type K005 and go to the maintenance, we see that material is obligatory.
After entering material in first line and when I hit enter, it does not ask me enter the material in the second and subsequent lines even though it is a mandatory field.
I want to achive this functionality in my custom screen also.
Can anyone let me know how to handle this?
Thanks,
Sandeep.

sandeep akula wrote:
I have developed a custom screen on which I have a table control with 5 fields. I wanted to make the first three fields mandatory. So instead of selecting the entry as "required" from the screen attributes for these input fields, I have looped at table screen in PBO and based on the screen name and screen group I have set the field screen-required = 1
Why didn't you set these fields as required on the attributes? That has to be the easiest way.
Rob

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reward points if useful.......:-)
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