Error 8508: ERROR_DS_NONSAFE_SCHEMA_CHANGE
Windows Error Code Lookup: Decode Windows error codes: Win32, HRESULT (0x80070005), NTSTATUS, Windows Update, msiexec and blue-screen stop codes, with what to check next.
Paste the number from an error dialog, event log, script or setup log: 0x80070005, 80070005,
-2147024891, 1603, 0xC0000005, a stop code like 0x7E, a name like
E_ACCESSDENIED, or a few words. You get every way Windows could mean that number (an HRESULT often wraps a
Win32 error, so 0x80070005 is "Access is denied" too), its parts decoded, and what to check for the common ones. Names
and messages come from the Windows SDK headers and Windows' own message tables; see Microsoft's
System Error Codes and
[MS-ERREF] for the full references.
Try: 0x80070005, 1603, 0xC0000005, 0x800F081F, 0x8024402C, 0x7E, access denied
0x0000213C = 8,508
Win32 error 8508 (0x213C)
Adding a new mandatory attribute to an existing class, deleting a mandatory attribute from an existing class, or adding an optional attribute to the special class Top that is not a backlink attribute (directly or through inheritance, for example, by adding or deleting an auxiliary class) is not allowed.
As an HRESULT (HRESULT_FROM_WIN32): 0x8007213C