Update topic

Update a topic.

Not all properties are included in the response by default, make use of the OData select feature to adjust the response fields.

Nullable fields without a value may not be included in the response.

Values for Catenda fields (usually prefixed with bimsync_) are persistent across updates. Other fields are not and their values will be unset if not included in the update request. For example, an update request that doesn't include a description will remove any existing value for description.

BCF fields that have a corresponding Catenda field will be updated when setting the Catenda field. For example setting bimsync_assigned_to will also set assigned_to and viceversa if the assignee is a Catenda user. This means that the assigned_to field of a topic doesn't need to be set if bimsync_assigned_to is being used. But if the assignee is not a member of the project then the assigned_to field should always be set when updating a topic to avoid losing its value.