AMT enrollment error - Violation of UNIQUE KEY constraint 'EN_EnrollmentRecords_AK'.

Question

Hello,
I've trouble enrolling AMT computer with SCCM 2012
I've foud the following error in Amtproxymgr.log
15/05/2014 14:54:50     
Found instruction file: D:\Apps\Microsoft Configuration Manager\inboxes\amtproxymgr.box\{C6B0AAB5-BB02-4673-B44A-118917419389}.OTP
15/05/2014 14:54:50     
It's client provisioning request to be processed.
15/05/2014 14:54:50     
Stored provisioning request into database. SMSID: Machine_GUID
15/05/2014 14:54:50     
Target machine SMSID:Machine_GUID is a AMT capable machine.
15/05/2014 14:54:50     
Passed SanityCheckBeforeProvision(). FQDN is MYCOMPUTERNAME.domain.
15/05/2014 14:54:50     
BASE64 string OTP is : OTP_STRING
15/05/2014 14:54:58      *** EN_EnrollmentAdminInsert @ProfileId = '16777217', @AssignedSiteCode = N'SITE_CODE', @DeviceName = N'MYCOMPUTERNAME', @ResourceID = '16816953', @OwnerIdentity = N'', @ClientType
= '1', @OrganizationUnit = N'LDAP://OU=OU_NAME
15/05/2014 14:54:58     
*** [23000][2627][Microsoft][SQL Server Native Client 11.0][SQL Server]Violation of UNIQUE KEY constraint 'EN_EnrollmentRecords_AK'. Cannot insert duplicate key in object 'dbo.EN_EnrollmentRecords'. The duplicate key value is (MYCOMPUTERNAME). : EN_EnrollmentAdminInsert
15/05/2014 14:54:58     
Fail to insert Enrollment Record!
15/05/2014 14:54:58     
Error: Failed to create enrollment record.
If I do a query on V_R_SYSTEM the resource ID for MYCOMPUTERNAME is 16816953.
If I do a query on EN_EnrollmentRecords the Ressource Id associated  to
MYCOMPUTERNAME is 16777351
So there is already a record for MYCOMPUTERNAME in
EN_EnrollmentRecords.
I think the reason is that the computer resource has been removed from SCCM and then readded. The computer has now a new Ressource ID. But the deletion of the previous computer ID did not removed the record from
EN_EnrollmentRecords.
How can I solve this ?

Answer 1

Open Sql Server Management Studio, and do the query below.
select * from dbo.en_EnrollmentRecords where ResourceID ='16777351'
delete from dbo.EN_EnrollmentRecords where ResourceID = '16777351'
Delete the Device from console and AD and try provisioning again.
Note: Please backup your Database before doing this modification. Modifying database will be at your own risk.
Juke Chou
TechNet Community Support