Username length increased to 12 chars; it4i-admins/it4i-idm-scripts#21

docs.it4i/general/obtaining-login-credentials/obtaining-login-credentials.md

@@ -64,7 +64,7 @@ Once authorized by PI, every person (PI or Collaborator) wishing to access the c
 1. Full name and affiliation
 1. Statement that you have read and accepted the [Acceptable use policy document](http://www.it4i.cz/acceptable-use-policy.pdf) (AUP).
 1. Attach the AUP file.
-1. Your preferred username, max 8 characters long. The preferred username must associate your surname and name or be otherwise derived from it. Only alphanumeric sequences, dash and underscore signs are allowed.
+1. Your preferred username, max 12 characters long. The preferred username must associate your surname and name or be otherwise derived from it. Only alphanumeric sequences, dash and underscore signs are allowed.
 1. In case you choose [Alternative way to personal certificate](#alternative-way-to-personal-certificate), a **scan of photo ID** (personal ID or passport or driver license) is required
 
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