| Message id {0} isn’t valid. | The messageID value provided in the URL wasn’t in a valid format. |
| Message {0} isn’t valid for the client. | The messageID value included in the URL doesn’t match a valid value within the account. |
The Message must be in Active status in order to send. | The message doesn’t have a status of Active or Scheduled. |
| The count of Target List IDs can’t be zero. | Indicates that no valid Target List IDs were specified. |
| Target list id [{0}] is invalid. | Indicates that the Target List ID specified is invalid. |
| TargetListIds isn’t applicable when OverrideTemplateTargetLists is false. | Indicates that the OverrideTemplateTargetLists flag wasn’t set to TRUE when specifying Target List IDs. |
| Cannot override template target lists when no target list ids are specified. | Indicates that no TargetListIDs were specified even though the OverrideTemplateTargetLists flag was set to TRUE. |
| The count of Exclusion List IDs can’t be zero. | Indicates that no valid Exclusion List IDs were specified. |
| Exclusion list id [{0}] is invalid. | Indicates that the Exclusion List ID specified is invalid. |
| ExclusionListIds isn’t applicable when OverrideTemplateExclusionLists is false. | Indicates that the OverrideTemplateExclusionLists flag wasn’t set to TRUE when specifying Exclusion List IDs. |
| Cannot override template exclusion lists when no exclusion list ids are specified. | Indicates that no ExclusionListIDs were specified even though the OverrideTemplateExclusionLists flag was set to TRUE. |
| Exclusion list ids can’t be specified when IgnoreExclusionLists is true. | Indicates that IgnoreExclusionLists was set to TRUE even though ExclusionLists were specified. |
| OverrideTemplateExclusionLists can’t be true when IgnoreExclusionLists is true. | Indicates that IgnoreExclusionLists was set to TRUE even though OverrideTemplateExclusionLists was also set to TRUE . |
| Message is blank and no override message was provided. | Indicates that the Message’s stored text is blank and no override was provided. |
| Cannot override message text with a blank message. | Indicates that the override flag is true but a blank or missing MessageText field was submitted. |
| MessageText isn’t applicable when OverrideMessageText is false. | Indicates that no MessageText is needed and shouldn’t be included in the request. This is present to eliminate confusion and errant sends with the static message text. |
| A UTC offset must be specified when using a blackout window. | Indicates that no UTC time zone offset was provided in the BlackoutWindow object. |
| {0} isn’t a valid UTC offset. | Indicates that the UTC offset provided isn’t in the correct format. |
| A window start time must be specified when using a blackout window. | Indicates that no blackout window start time was provided in the BlackoutWindow object. |
| {0} isn’t a valid blackout window start time. | Indicates that the blackout window start time isn’t in the correct format. |
| A window end time must be specified when using a blackout window. | Indicates that no blackout window end time was provided in the BlackoutWindow object. |
| {0} isn’t a valid blackout window end time. | Indicates that the blackout window end time isn’t in the correct format. |
{0} isn’t a valid send time (yyyy-MM-dd HH:mm). | Indicates that the send time isn’t in the proper format. |