This is a fix to the issue – Purge APNs certificate data in SCCM SQL Database

In Configuration Manager, disable iOS inside of the Windows Intune Connector.

Go to “Administration > Cloud Services”
Right click the Intune subscription in the right pane and select “Properties” to get a popup window.

On the “iOS” tab, uncheck “Enable iOS Enrollment”.

On your SCCM SQL server login with a service account that can Read and write to the SCCM Database and run the script listed.

1. update SC_ClientComponent_Property set Value2 = ” where Name like ‘%APNS%’

2. delete from MDMPolicy where PolicyType = 7

3. delete from MDMPolicyAssignment where PolicyType = 7

4. update SC_ClientComponent_Property set Value2 = ” where Name like ‘%APNS%’

5. delete from MDMPolicy where PolicyType = 11

6. delete from MDMPolicyAssignment where PolicyType = 11

DELETE Drs_Signals

On your primary SCCM server recreate APNs Certificate request again