This might change depending on what version of ServiceNow you’re running, but on the Helsinki version I’ve got as a sandbox you can use an ‘OnLoad’ client script with the following code to hide the close button in the info message container.

$('output_messages').select('button')[0].hide();

My requirement is like to make the Message permanently at the top of the form.
Please anyone help me to achieve this.

None that I’m aware of, but I haven’t had any opportunity to dig into the API. You might get another opinion on the SN community.

The only ways to do this are to set up the field message in an ‘onChange’ script so that it’s evaluated each time the field changes (and re-displays accordingly) or to avoid field messages entirely and just use an annotation if the message is always supposed to be there.

For example, if I add one to an email address field then you type something in that field and blur it, the message goes away. I want it to stay there permanently.

Looks like the support for this in client-side messages has been removed in the Geneva release. You can’t inject your own html anymore using the basic methods unfortunately. I’ve updated the documentation above to reflect this. If you’d like to see the behavior in Geneva you’ll need to contact ServiceNow support to see about an enhancement.

I have a note for a different CSS styling that I found, which may help with the styling…

Set field width:

Fuji: https://servicenowguru.com/system-ui/field-styles-service-catalog-variables/
g_form.getControl(‘VARIABLE_NAME’).style.width = ‘150px’;

Geneva: https://community.servicenow.com/message/881984#881984
g_form.getControl(‘VARIABL

Clearing messages (server-side or client-side) is accomplished via the ‘GlideUI.get().clearOutputMessages();’ call shown above in the client-side section.