Problem in PO Printing

Hello,

I am working on SMARTFORMS. When we display any PO , it displays Material number along with Material text. If material text is stored in PO it takes from PO, if edited in ME22, it takes that one and if it is neither in PO nor edited it fetches from Material master. Similarly, we need Service Text for Servide numbers. Right now it takes Service text from PO if it is there.

If edited through ME22 it fetches that also. But how can we fetch the service text from Service Master if neither the text in PO nor edited in ME22. Is there any field in tables ESLL or AMSD or any other? How can we proceed? Please advise.

Thanks and Regards,

Harish