Hi,
I’m sorry to hear that you’re having trouble with your DP locations.
The error code 0x87d00215 indicates that a new version of client installation source was required, but a distribution point could not be located.
Is the client package distributed to every Distribution Point (DP)?
Does the monitoring node exhibit 100% compliance?
Are the boundaries/groups configured accurately? Please check if your client subnet/AD site is added in SCCM boundary and if IP Subnet/AD Site is associated with any boundary group.