---
title: "Validation rule engine"
description: "androidsdkvalidationruleengine}"
url: https://developers.dhis2.org/docs/mobile/android-sdk/validation-rule-engine
source: https://github.com/dhis2/developer-portal/edit/main/docs/mobile/android-sdk/validation-rule-engine.md
---

# Validation rule engine {#android_sdk_validation_rule_engine}

Validation rules associated to a particular dataSet can be evaluated using the validation rule module. It only suppports the evaluation of validation rules in the context of a data entry form, i.e, validation rules that use data values contained in a particular combination of dataSet, period, organisationUnit and attributeOptionCombo.

:::info

Currently it is not possible to evaluate validation rules acrross different dataSets, periods, organisationUnits or attributeOptionCombos.
:::

```kotlin
d2.validationModule()
    .validationEngine()
    .suspendValidate(dataSet-uid>, period-id>, organisation-unit-uid>, attribute-option-combo-uid>)
```

It returns a validation result containing the list of violations. Each violation includes helpful methods to get a human-readable representation of the conflict.