You can validate a Power Apps form before submission to ensure that all criteria are met. This can include requiring certain fields to have values, entering dates within a specific range, or formatting phone numbers in a specific way. If data validation is not passed for any field, it should appear in an error state with a helpful error message. The article provides a step-by-step guide on how to validate different types of fields in a Power Apps form, including required text input fields, number fields, date picker fields, phone number fields, and email fields. It also includes code snippets and screenshots to help you implement the validation rules.
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