Hi guys, maybe someone has similar problem: Last weekend I’ve performed minor upgrade from OTRS 5.0.10 to 5.0.18 . As it’s minor update I didn’t expect any issues and on first sight it looked flawless. Then, after mails start to come, I’ve noticed that for all customers that are not listed in customers section, I do not receive CustomerID (it’s blank). Usually it was showing the e-mail address of a person who sent an e-mail. The configuration of Config.pm is the same as in 5.0.10: # customer unique id CustomerKey => 'uid', # customer # CustomerID => ‘XXXOtrsCustomerId', CustomerID => 'mail', CustomerUserListFields => ['cn', 'mail'], CustomerUserSearchFields => ['uid', 'cn', 'mail'], CustomerUserSearchPrefix => '', CustomerUserSearchSuffix => '*', CustomerUserSearchListLimit => 1000, CustomerUserPostMasterSearchFields => ['mail'], CustomerUserNameFields => ['givenname', 'sn'], # show not own tickets in customer panel, CompanyTickets CustomerUserExcludePrimaryCustomerID => 0, # add an ldap filter for valid users (expert setting) CustomerUserValidFilter => '(accountEnabled=TRUE)', # administrator can't change customer preferences AdminSetPreferences => 0, Map => [ # note: Login, Email and CustomerID are mandatory! # var, frontend, storage, shown (1=always,2=lite), required, storage-type, http-link, readonly [ 'UserTitle', 'Title', 'title', 1, 0, 'var', '', 0 ], [ 'UserFirstname', 'Firstname', 'givenname', 1, 1, 'var', '', 0 ], [ 'UserLastname', 'Lastname', 'sn', 1, 1, 'var', '', 0 ], [ 'UserLogin', 'Username', 'uid', 1, 1, 'var', '', 0 ], [ 'UserEmail', 'Email', 'mail', 1, 1, 'var', '', 0 ], [ 'UserCustomerID', 'CustomerID', ‘XXXOtrsCustomerId', 0, 1, 'var', '', 0 ], [ 'UserCustomerIDs', 'CustomerIDs', ‘XXXOtrsCustomerIdSupp’, 1, 0, 'var', '', 0 ], [ 'UserPhone', 'Phone', 'telephonenumber', 1, 0, 'var', '', 0 ], [ 'UserAddress', 'Address', 'postaladdress', 1, 0, 'var', '', 0 ], [ 'UserComment', 'Comment', 'description', 1, 0, 'var', '', 0 ], ], Am I missing something or is a bug? I will be glad for any tips, GR, Lukasz