A client request to the Federation Service failed because the syntax of a Lightweight Directory Access Protocol (LDAP) attribute ...

A client request to the Federation Service failed because the syntax of a Lightweight Directory Access Protocol (LDAP) attribute is different from the standard syntaxes that are defined in RFC 2252. 

This event can occur if the directory schema has been extended to new syntaxes. 

User Action 
If this is a valid attribute with a new syntax, extract this claim from a custom transform module instead. 

Additional Data 
LDAP Server: %1 
LDAP attribute name: %2 
LDAP attribute type: %3