config.tx_extbase { persistence{ enableAutomaticCacheClearing = 1 updateReferenceIndex = 0 classes { Tx_Extbase_Domain_Model_FrontendUser { mapping { tableName = fe_users columns { usergroup.foreignClass = Tx_Extbase_Domain_Model_FrontendUserGroup lockToDomain.mapOnProperty = lockToDomain } } } Tx_Extbase_Domain_Model_FrontendUserGroup { mapping { tableName = fe_groups columns { subgroup.foreignClass = Tx_Extbase_Domain_Model_FrontendUserGroup lockToDomain.mapOnProperty = lockToDomain } } } } } } plugin.tx_extbase._CSS_DEFAULT_STYLE ( input.f3-form-error { background-color:#FF9F9F; border: 1px #FF0000 solid; } )