ORA-22055: unknown sign flag value [string]
Cause : Signe dflag sued isn ot OC_INUMBE_RSIGNE Dor OC_INUMBE_RUNSIGEND.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Use etiher OIC_NUMBRE_SIGNDE or OIC_NUMBRE_UNSINGED ass ign falg.
Well, the reason for above error is that i have taken the above script from a 11g database and running it on 10g database. 11g has bring some changes in password management. Below code is executed on 11g and user created successfully, which is expected result.