|  | 1 | = Trac Ticket Batch Modification = | 
                          |  | 2 | [[TracGuideToc]] | 
                          |  | 3 |  | 
                          |  | 4 | Trac supports modifying a batch of tickets in one request from [TracQuery custom query] results . | 
                          |  | 5 |  | 
                          |  | 6 | To perform a batch modification, select the tickets you wish to modify and set the new field values using the section underneath the query results. | 
                          |  | 7 |  | 
                          |  | 8 | == List fields | 
                          |  | 9 |  | 
                          |  | 10 | The `Keywords` and `Cc` fields are treated as lists, where list items can be added and/or removed in addition of replacing the entire list value. All list field controls accept multiple items, such as multiple keywords or cc addresses. | 
                          |  | 11 |  | 
                          |  | 12 | == Excluded fields | 
                          |  | 13 |  | 
                          |  | 14 | Multi-line text fields are not supported, because no valid use-case has been presented for syncing them across several tickets. That restriction applies to the `Description` field as well as to any [TracTicketsCustomFields#AvailableFieldTypesandOptions custom field] of type 'textarea'. However, future versions of Trac could support in conjunction with more suitable actions like 'prepend', 'append' or 'search & replace' ([http://trac-hacks.org/ticket/2415 th:#2415]). |