Linking names in collaborator and bitbucket

[MrDecisive]

Hi,

I have a problem with the linking of names in collaborator with the names in bitbucket. They both use the same active directory server for authentication but when I create a pull request in bitbucket the debug logs in collaborator say 

"Collaborator cannot find remote user mapping for pull request creator, review created by system administrator"

This is the AD Realm from collaborator.

<Realm allRolesMode="strictAuthOnly"
className="org.apache.catalina.realm.JNDIRealm"
connectionURL="ldap://my.ldap.server"
referrals="follow"
userSearchAsUser="true"
userBase="OU=Sites,DC=my,DC=domain,DC=name"
userSubtree="true"
userSearch="(userPrincipalName={0})"
>
</Realm>

This is the user config from BitBucket:

User Name Attribute: required

The attribute field to use on the user object. Examples: cn, sAMAccountName.

User Name RDN Attribute:

The RDN to use when loading the user username.Example: cn.

User First Name Attribute: required

The attribute field to use when loading the user first name.

User Last Name Attribute: required

The attribute field to use when loading the user last name.

User Display Name Attribute: required

The attribute field to use when loading the user full name.