Update cross-tenant-onedrive-migration-step5.md

Emphasize source tenant only for compatibility check

Author: vgaddam-pm

microsoft-365/enterprise/cross-tenant-onedrive-migration-step5.md

@@ -161,7 +161,8 @@ get-spoTenantIdentityMappingUser -Field SourceUserKey -Value [email protected]
 
 Before starting any cross-tenant migrations, make sure that both SharePoint database schemas are up to date and compatible between source and target.
 
-To perform this check, run the below cmdlet on your Source tenant.
+> [!NOTE]
+>  To perform this check, run the below cmdlet ONLY on your Source tenant, not the Target tenant.
 
 ```powershell
 Get-SPOCrossTenantCompatibilityStatus -PartnerCrossTenantHostURL [Target tenant hostname]