POPUP in DP80/DP90

Hello,

My customer needs that, as soon as they create a sales order, a relevant text should be displayed by SAP.

I have customized the text determination in sales orders as mandatory (option Y) in VOTXN and it works fine when sales order is created by VA01.

However, if it is created with transaction DP90 across a work order it doesn't work at all.

Does anybody know the solution to this problem?

Thank you,

Óscar