Object link LFA1

Hi gurus,

I've created object link LFA1 in DC10 (I also have EKPO and EBAN object links). But when creating a purchase order and linking a document to it, it doen't create the link, it has the EKPO link but never the LFA1 link. When linking it manually via trx. CV02N I do not know where I can see this link. it is not visible in ME23N and also not visible in trx. XD03.

Where can I see and set this link properly?

kind regards,

Wim van Erp