creating AD accounts for IdM solutions

What are some Security Concerns and Best Practices for creating Active
Directory accounts for 3rd party Identity Management solutions.

non-MS Identity Management (IDM) solutions require creation of an
Active Directory account with domain wide administrative priveleges.
The IDM solution then uses that account for day to day administration
task like create new users, change password, group membership etc.

1) What are some security concerns with this approach.

2) What are best practices to prevent abuse of this account

3) What type of auditing needs to in place to prevent abuse.

Saqib Ali, CISSP
"I fear, if I rebel against my Lord, the retribution of an Awful Day
(The Day of Resurrection)" Al-Quran 6:15