CmdID / PowerShell / Cmdlets / Get
Get-ExoInformationBarrierRelationship
Use the Get-ExoInformationBarrierRelationship cmdlet to view information barrier relationships in your Exchange Online organization. Exchange PowerShell reference
From the Exchange PowerShell reference 2 parameters Its page in the reference
Parameters
-RecipientId1The RecipientId1 parameter specifies the first recipient in the Exchange Online barrier relationship.-RecipientId2The RecipientId2 parameter specifies the second recipient in the Exchange Online barrier relationship.