This value is required and is validated against the set of active asset/CI applications which the user can access.

If the user has access to at least one active asset/CI application, invalid application IDs will result in a 400 Bad Request response.

If the user cannot access any active asset/CI application, send a value of 0. However, no matter what value is sent in this situation, the organization's default asset/CI application will be used for creates and the currently saved value on the server will be used for edits.

When editing, this value cannot be changed if there are any service office relationships or maintenance windows specified.