/product-groups/translation_management/worldserver/b/weblog8/posts/ws-10-4-5-wsxi-5863-no-proper-message-is-displayed-when-a-placeholder-is-missing-or-is-out-of-orderSymptoms: Translate an IDML file. In BWB, delete a placeholder or change its order. Save the target file and you will see the following error: "System.NotImplementedException: The method or operation is not implemented." The previous error messageen-USTelligent Community 12 Non-Production