REST API 7.1.1 Change system user password via API

Question

Dear community, 
 we have a state of the art restricted and hardened environment according to ESAE approach split into different Tier levels. However, as it is not possible to fully rely on Active Directory authentication (System user authentication and user required for e.g. Designer), we have the necessity to change the password of the system user "viadmin" on a regulary basis as also on trigger. 
 
 Can we use the REST API in order to reset the user's password? 
 Also after reading the documentation it is not year clear to me if I could use the REST API or any other approach to imlement this. 
 
 Thanks in advance for your feedback! 
 Best regards 
 Stefan

Markus Weiss-Ehlers · Accepted Answer

First of all, I would like to ask, why you are unable to use Active Directory Authentication for the Designer? There are several options available to allow AD authentication for the Designer. 
 But to answer your question. 
 You just need to change a single entity using the REST API as described here https://support.oneidentity.com/technical-documents/identity-manager/8.0/rest-api-reference-guide/10#TOPIC-863104 
 The table is DialogUser , the property to change is Password .

Markus Weiss-Ehlers · Answer

The information about not giving an AD account the same permission as viadmin is wrong. 
 
If you use either the Active Directory user account or User Account authentication modules, you can assign the system user to the Person object as permission to use.