LDAP add failed with CONSTRAINT_VIOLATION

I have a network trace wherein Computer account add in an OU failed with CONSTRAINT VIOLATION error, but I am unable to figure out the constraint it's failing for

LDAPMessage addRequest(3) "cn=PHYSICSLAB934,OU=Other,OU=Lab,DC=HICCUPS,DC=COM"

#Attributes list
name: PHYSICSLAB934
sAMAccountName: PHYSICSLAB934$
userAccountControl: 4098
objectClass: top
objectClass: organizationalPerson
objectclass: user
objectClass: computer

The operation failed with error

LDAPMessage addResponse(3) constraintViolation (0000207C: AtrErr: DSID-031530E5, #1:	0: 0000207C: DSID-031530E5, problem 1005 (CONSTRAINT_ATT_TYPE), data 0, Att 90001 (name))

I no longer have access the AD server so have to figure out what went wrong at that time. And wish to recreate the error on my test bed.

Where may I find the constraints for 'name' attribute ? And more details about the error codes ?

Any pointers/suggestions ?