As the Integration Mappings API performs different types of
validation, some errors might occur. You can find descriptions
and solutions to these common errors below.
Service account is not a co-owner of the folder
The Box as Content Layer for Slack service account must be added
as an owner or co-owner of the folder to manage collaborations and uploads.
To resolve this error use the data in the response to make sure the
service account has the necessary role to perform the mapping.
Perform the following steps:
- Copy the
service_account_email from context_info.
- In the folder settings, use the
Invite People option to invite the service account as a co-owner.
Channel is already mapped to a folder in Box
API returns the following error when you attempt to create
a mapping for a channel that already has a Box folder mapped:
If you wanted to start using a new folder, use GET to retrieve
the id of the mapping and then the UPDATE method to update the
target Box folder.
Channel was not found
API returns this error if the Slack bot associated with the integration
can not retrieve information about the channel.
Ensure that the partner_item is correct - make sure you provide slack_org_id
for org installations and slack_workspace_id for workspace ones. If the
channel is private, ensure that the Slack bot has been added to the channel.
Channel not suitable for Custom File Storage (CFS)
Slack Connect channels (cross enterprise channels) are currently not supported
as a part of Box as a Content Layer for Slack.
Box folder externally owned
Box folder selected for mapping must be owned by the enterprise that the Admin
is part of.
Custom File Storage (CFS) turned off
API returns this error when you’re trying to create the mapping for an
enterprise that has Box for Slack installed, but did not enable
Box as a Content Layer for Slack.
Box enterprise mismatch
API returns this error when there is a mismatch between the Admin’s enterprise
and Box for Slack configuration. See Installing and using Box for Slack
for information on how to enable Box for Slack. Last modified on September 4, 2026
