Enhancement in MB21 - need suggestions

Hi friends,

                   I have an issue .I am doing an enhancement in MB21(Create Reservations ) where i need to check whether the  total amount of materials entered

is exceediing the budget of wbs element.

I am using a pop up to confirm in it as the enduser needs to change the amount if we are getting some error.

My issue is on iving leave to screen the item datas are getting cleared,and the header data of the first screen is getting cleared.

What can i do ?

I used  MM07RFB0 for the enhancement

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Message was edited by: Suhas Saha