---
title: How to create pass/fail validation rules in your Flow form
description: Validation rules help ensure that submitted form data meets specific conditions. This article explains how to set up pass/fail validation rules that can mark your form as valid, invalid, or show error messages based on field values.
---
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# How to create pass/fail validation rules in your Flow form
## Validation rules help ensure that submitted form data meets specific conditions. This article explains how to set up pass/fail validation rules that can mark your form as valid, invalid, or show error messages based on field values.
#### **Step 1 — Open the field's validation rules**
Select the **Form** tab at the top of the alert, then click the field you want to add validation to — in this example, a selection field. Open the **Field Validation Rules** panel on the right.
#### **Step 2 — Set the primary valid condition**
Drag the field in from the form layout, select the `=` comparison operator, and enter the value that should make the form pass — in this example, "Pass":
```
data["field"]=="Pass"
```
This means that when the field equals "Pass", the form is marked as valid.
#### **Step 3 — Add an alternative valid condition**
Under **Otherwise, mark form as Valid without message, when**, add another condition where the form should still be valid — for example, when the field equals "N/A":
```
data["field"]=="N/A"
```
#### **Step 4 — Add the catch-all invalid condition**
In the final section, **Otherwise, mark form as Invalid with message**, enter your error message — for example, "Please notify QA" — and set the catch-all condition:
```
1==1
```
#### **How the rules are processed**
The rules run in order, top to bottom:
- If the field equals "Pass", the form is valid.
- Otherwise, if the field equals "N/A", the form is still valid.
- Otherwise, the form is marked invalid with your message.
#### **Test it**
Preview the form with the play button and test each expected value — Pass, N/A, and anything else — to confirm the form behaves as expected for each.
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