Pi message mapping issue - source content matching

[christian_pichler]

Hello!

I would need your help regarding a mapping issue (IDOC DESADV01 -> EDIFACT DESADV):

For each E1EDP08 segment a SSG16 segment is created:

In my source message I have the following structure:

In my target message I would need some information from both segments (e.g. ANZAR from E1EDP08 and MATNR from E1EDP09). So I need to have a possibility to match the information with help of the field POSNR which is contained in both segments. If POSNR from E1EDP08 matches POSNR from E1EDP09 the content of MATNR should be forwarded to the target field:

Does anyone know how to handle this?

Thanks a lot for your help,

Christian