That’'s what i also expected. So I will now do the following:
AFAIK the account creation process is not multi threaded. So I will create an AfterCreate rule - this will make an API call to ISC and store he last generated sAMAccountName on a custom attribute on the Source:
Using this PATCH call in the PS Script:
In the Rule, I will fetch the value of this attribute and increment it by 1. What do you think? @iamology @patrickboston