unable to a create user with more that 20 characters in Microsoft Active Directory'

Issue Summary

Unable to a create a user with more that 20 characters in Microsoft Active Directory'

Steps to Reproduce

1. Connect an AD as a connector with Crowd
2. Try to create a user that has more then 20 characters

Expected Results

If username mapping as UPN or CN, the user should be created in AD

Actual Results

The below exception is thrown in the xxxxxxx.log file:

om.atlassian.crowd.exception.InvalidUserException: Uncategorized exception occured during LDAP processing; nested exception is javax.naming.NamingException: [LDAP: error code 80 - 00000523: SysErr: DSID-031A124A, problem 22 (Invalid argument), data 0

Crowd tries to set Samaccountname even if it is not set as username attribute

Workaround

Create username less then 20 Characters