---
title: "Set up validation rule of type Mandatory or Blank"
slug: "set-up-validation-rule-of-type-mandatory-or-blank-flow"
tags: ["Flow topic"]
updated: 2026-03-20T08:26:01Z
published: 2026-03-20T17:44:53Z
canonical: "docs.staedean.com/set-up-validation-rule-of-type-mandatory-or-blank-flow"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.staedean.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Set up validation rule of type Mandatory or Blank

Use validation rules to check if the data is in line with the defined standards.

To validate data, you can use several validation types. This topic explains how to set up validation rules of these types:

- **Mandatory**: Makes it mandatory to fill the defined field.
- **Blank**: Validates if no value is entered in a field.

For each validation rule, you can set up:

- A validation message that is shown if the validation rule is not met.
- Conditions to define the data to which the rule applies.

## Flow diagram

> [!NOTE]
> Note
> 
> In the flow diagram, clicking ‘Set up validation rule conditions’ opens the corresponding section under ‘Set up validation rules’.

[Embedded content](https://viewer.diagrams.net/?tags=%7B%7D&lightbox=1&highlight=0000ff&edit=_blank&layers=1&nav=1&title=Set_up_validation_rule_of_type_Mandatory_or_Blank.drawio&dark=auto#R%3Cmxfile%3E%3Cdiagram%20name%3D%22Page-1%22%20id%3D%220%22%3E7VpNk9o4EP01HJ0y%2FoI5hmGSHCbZVFFbmzkKu42V2JZLlgecX78tW%2F7ChmBgKDbZuSC1pJb8%2BvVTm2FiPka7j5wkwWfmQTgxdG83MZcTw5haUx0%2FpCUvLQ%2BWXRo2nHpqUmNY0Z%2BgjGrdJqMepJ2JgrFQ0KRrdFkcgys6NsI523an%2BSzs7pqQDfQMK5eEfes%2F1BOBshq63gx8AroJqq3n1UhEqtnKkAbEY9uWyXyamI%2BcMVG2ot0jhBK9Cphy3YcDo%2FXJOMTilAVGf4HykYq8el5cgtBiZ7ENqIBVQlw5ssXooi0QUYi9KTZ9GoaPLGS8WGf6vm%2B4LtpTwdkPaI3oxV89UqEofZS7v5IwU7uvBOFCWYEL2LWOqR7qI7AIBM9xStDC3VIgb5sgOcqknNgz1c%2B7K4hiyKZ23GCIDQVj0f07Bf7X%2BrvkmaGHZA2hOjZIQ5aUD0M9IiiLscMzhNXQmS9Zmyey%2FZnEOMyK8yNChr4ISfyjPElIsVU4xH1xFtEiEiO%2FIhkvtDA3xY8UhJYlWrORJrfRmK%2FJLeSScgONcW3dOK9YYLawVAQ5zgjOstgDT4VsHCvWOpjgnMeKcfGf9%2BM%2F3SeA0SXA1BjPAOy2SDCcZ9YpecYDFq2z9Bc5Bc7onCpo%2BZWltOCguQzBx0MsJJwUZe15bziinifPtEA6baSBl5jWC94rez2xn7QBqhrqHaSpFFOMQQDIfodEkhzxOk2KVU4o3Xr0FZubYoeBVKHIcD1movCHkz4c8iPzoXF1Lcmw9hgz7zKmlpS314wazYuFQXlqCcOAKth%2FrCrM9lThnHvhFFVw%2FjBVWDKQuSwCGGb4L%2BWBJEmYF%2BWexCgBl%2FrUlZUk8v%2FehME64yo5Uxiw0PWKMKVX0IZ9ZxVZZ7eUA9cF2%2FeHCG065oPp9Qht3FAOLP1t5GB%2BV8W4MZTBT7F3o1LctseD3EP0oXQBXu%2BFrg8xy7gLnbeiNuroYaW6jIuAbVhMwqfGuuiyvZnzzFiijN9BiFy9zpIMNawTr75Auxl%2FLTzqdSjwXWgDol%2B1t2DnEGI2v3Yf%2BBIQq9fusSia%2FwkUrVuhOD0PResOUcTz8vxbu%2FMiO%2B%2FsqrvctQeX%2BUH07Vuhr1JafSVE1hWY%2BkAQBkQXwX0ur%2BM2TFUl5OJa4MdKIQ4p%2Fal2lUgkjMaieB57MbGXQ1L7AunJUjuIl1qi6e%2BsjrIah%2BFUnr%2FK07U8TPVjDpjvpyB60aiPd1qAzN8oPXZUfGsSAnsvappsN7khO4dTw7lValgjUmNY02%2BdGl%2FYtTLD6BD7CJqHMqOzXqtKuOumhn1eatj3mBr1zdFcFi%2Bdu%2BLUm%2BPS9CiWvuec5K0JinsH411%2Fka8Cbjp7X6%2FvzXeOz8dGeYKzqeGcRw3nrqlxaVExu5AaJyvnbIRyDkP%2Bf1HxpkXF%2FPdJjz7N57ei%2BcMIms%2FvguZ3WyBUMnBVmhtnvqDP7pDm1ysQLk2PqxQI1f8XTy0Q9uaPLRCw2%2Fx2oJze%2FATDfPoX%3C%2Fdiagram%3E%3C%2Fmxfile%3E)

## Related

- [Set up validation rule conditions](/set-up-validation-rule-conditions.md)
- [Set up validation rule of type Web service](/set-up-validation-rule-of-type-web-service.md)
- [Set up validation rule of type Web service](/set-up-validation-rule-of-type-web-service-flow.md)