Mapping of custom LDAP attribute with DB Column

Mapping of custom LDAP attribute with DB Column

Hello,
i am tryng to map custom LDAP attribute with DB Column but after i create it i can't find it in drop down menu of "Data Source - LDAP Attribute Mapping". Is it possible to create custom attribute and map it with DB ? Or i am doing it wrong ? Please help.

Best regards,
Kristiyan

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