EDI: Partner profile not available

hi,

i am doing intercompany billing by EDI. Found that had below problem

EDI: Partner profile not available

Message no. E0332

Diagnosis

A partner profile could not be found with the following key:

/0000000000/LI/

This involves the key fields of the table EDPP1:

-PARNUM partner number

-PARTYP partner type

Procedure

Please check the EDI partner profiles.

I had check the profile by WE20/WE21, still not work. pls advice. thanks