what version do you currently run?
Current AR system server (Production) Version : 8.1.01 201704242349Hotfix and current BEM system is version 7.4.00.37 both on salaries 11.3 v servers the target system after upgrade will be AR system version 9.1.04 which was upgraded on the UAT servers: this upgrade did not work with BEM 7.4.00.37 and couldn't log more than 4 tickets upon testing.
Great that you run 9.1.04 for Remedy AR System. With BMC Support, you can get official comparability matrix and guidance for BEM integration. And with Community Members (in Remedy and TrueSight), you have thousands of people who can share their experience.