How to handle fault in Salesforce flow?

Hi,

If the flow is used only internally, such as at a call center, use the fault path to display the error message to the running user. In the same Screen element, ask the user to report the error to the IT department. To do so, draw the fault connector to a Screen element with this Display Text field.

You can use a fault connector on these elements:

Apex Plug-in
Record Create
Record Update
Record Lookup
Record Delete
Fast Create
Fast Update
Fast Lookup
Fast Delete

Thanks.