Updated from Slack docs, 2025/12/16

Author: Slack API Ref Buildbot

docs.slack.dev/methods/admin.workflows.triggers.types.permissions.set.json

@@ -52,7 +52,7 @@
             "desc": "Dict of permissions keyed by permission type ID.",
             "type": "object",
             "patternProperties": {
-              "trigger_type|private_channel_access|private_channel_message_access": {
+              "trigger_type|private_channel_access|private_channel_message": {
                 "type": "object",
                 "required": [
                   "visibility"

docs.slack.dev/methods/assistant.threads.setStatus.json

@@ -57,6 +57,9 @@
     },
     "invalid_thread_ts": {
       "desc": "Error returned when given an invalid thread_ts"
+    },
+    "reserved_username": {
+      "desc": "Reserved usernames are not allowed to be used."
     }
   },
   "examples": {

docs.slack.dev/methods/chat.appendStream.json

@@ -148,6 +148,9 @@
     },
     "channel_type_not_supported": {
       "desc": "Channel type not supported"
+    },
+    "message_not_owned_by_app": {
+      "desc": "The message is not owned by the app."
     }
   },
   "examples": {

docs.slack.dev/methods/chat.stopStream.json

@@ -114,8 +114,8 @@
     "message_limit_exceeded": {
       "desc": "Members on this team are sending too many messages. For more details, see https://slack.com/help/articles/115002422943-Usage-limits-for-free-workspaces"
     },
-    "message_not_owned_by_bot": {
-      "desc": "The message is not owned by the bot."
+    "message_not_owned_by_app": {
+      "desc": "The message is not owned by the app."
     },
     "messages_tab_disabled": {
       "desc": "Messages tab for the app is disabled."

docs.slack.dev/methods/chat.update.json

@@ -309,6 +309,14 @@
       "desc": "Internal update failure."
     }
   },
+  "warnings": {
+    "message_truncated": {
+      "desc": "The `text` field of a message should have no more than 40,000 characters. We [truncate really long messages](/changelog/2018-04-truncating-really-long-messages)."
+    },
+    "some_files_not_deleted": {
+      "desc": "Some files could not be deleted because the user does not have permission. These files remain attached to the message."
+    }
+  },
   "examples": {
     "success": {
       "url": "/api/chat.update?token=YOUR_TOKEN",

methods/assistant/assistant.threads.setStatus.json

@@ -56,6 +56,7 @@
     "org_login_required": "The workspace is undergoing an enterprise migration and will not be available until migration is complete.",
     "ratelimited": "The request has been ratelimited. Refer to the Retry-After header for when to retry the request.",
     "request_timeout": "The method was called via a POST request, but the POST data was either missing or truncated.",
+    "reserved_username": "Reserved usernames are not allowed to be used.",
     "service_unavailable": "The service is temporarily unavailable.",
     "team_added_to_org": "The workspace associated with your request is currently undergoing migration to an Enterprise Organization. Web API and other platform operations will be intermittently unavailable until the transition is complete.",
     "token_expired": "Authentication token has expired.",

methods/chat/chat.appendStream.json

@@ -52,6 +52,7 @@
     "message_limit_exceeded": "Members on this team are sending too many messages. For more details, see https://slack.com/help/articles/115002422943-Usage-limits-for-free-workspaces",
     "message_not_found": "Message not found",
     "message_not_in_streaming_state": "The message is not in the streaming state.",
+    "message_not_owned_by_app": "The message is not owned by the app.",
     "messages_tab_disabled": "Messages tab for the app is disabled.",
     "messaging_processing_failed": "Failed to process the message.",
     "metadata_must_be_sent_from_app": "Message metadata can only be posted or updated using an app-level token",

methods/chat/chat.stopStream.json

@@ -65,7 +65,7 @@
     "message_limit_exceeded": "Members on this team are sending too many messages. For more details, see https://slack.com/help/articles/115002422943-Usage-limits-for-free-workspaces",
     "message_not_found": "The message was not found.",
     "message_not_in_streaming_state": "The message is not in a streaming state.",
-    "message_not_owned_by_bot": "The message is not owned by the bot.",
+    "message_not_owned_by_app": "The message is not owned by the app.",
     "messages_tab_disabled": "Messages tab for the app is disabled.",
     "metadata_must_be_sent_from_app": "Message metadata can only be posted or updated using an app-level token",
     "metadata_too_large": "Metadata exceeds size limit",