OpenChannel
Opens or resumes a direct message or multiperson direct message.
Input
| Name | Type | Description |
| ChannelId | String | Resume a conversation by supplying an im or mpim's Id. Or, provide the Users field instead. |
| Users | String | Comma-separated lists of users. If only one user is included, this creates a 1:1 DM. Supply a channel when not supplying users. |
Result Set Columns
| Name | Type | Description |
| Success | String | The result of the procedure. |