To ensure users submit a valid bank routing number consisting only of the digits 0-9, what configuration should be used?

To ensure that users submit a valid bank routing number that consists only of the digits 0-9, configuring a validate rule with an edit validate rule is the most effective approach. The validate rule allows you to establish specific criteria that the input must meet, and when combined with an edit validate rule, you can apply more complex validations tailored to the requirements for a routing number.

The edit validate rule specifically focuses on input patterns and can enforce that only numeric values are accepted. By defining a validation condition that checks for only 0-9 digits, you can prevent incorrect formats at the time of submission. This proactive approach ensures that users receive immediate feedback if the input does not meet the required standards, improving user experience and data integrity.

Utilizing a format rule or a prompt for user input may help guide users but would not provide the same stringent validation required for this scenario. A user guide for input may offer helpful information but does not enforce any constraints on what can be submitted. Therefore, configuring a validate rule with an edit validate rule is the most dependable method to ensure compliance with the required format for a bank routing number.