Once the SIDs have been imported, your company's SIDs must be designated as a Company SID. This is required to properly create Outcollect usage. Also, if you acquire a new SID, you must designate that SID as a Company SID and create new roaming agreements with your existing roaming partners. When you toggle a SID from a non-company SID to a Company SID, you have the opportunity to create new roaming agreements.
In the event that your company no longer owns a SID, you must change the information in the SIDs window and disconnect the existing Roaming Agreements associated with that SID. When you toggle a Company SID to a non-company SID, you have the opportunity to disconnect the roaming agreements existing between the former Company SID and your Partner SIDs.