[Users] Openser with Radius

Hi all, I'm new in OpenSER and I try to authenticate users with my LDAP by a Radius server. My problem is that the attribute User-Password missed in the request I think. I searched a solution but nothing worked! Can someone help me please! Here is the log of radiusd : rlm_ldap: checking if remote access for A208534 is allowed by uid rlm_ldap: looking for check items in directory... rlm_ldap: looking for reply items in directory... rlm_ldap: user A208534 authorized to use remote access rlm_ldap: ldap_release_conn: Release Id: 0 modcall[authorize]: module "ldap" returns ok for request 4 modcall: leaving group authorize (returns ok) for request 4 rad_check_password: Found Auth-Type LDAP auth: type "LDAP" Processing the authenticate section of radiusd.conf modcall: entering group LDAP for request 4 rlm_ldap: - authenticate rlm_ldap: Attribute "User-Password" is required for authentication. modcall[authenticate]: module "ldap" returns invalid for request 4 modcall: leaving group LDAP (returns invalid) for request 4 auth: Failed to validate the user. Thanks for help Matthieu PS : Sorry for my english!