diff --git a/docs/resource-validation/README.md b/docs/resource-validation/README.md
index 4676e80338..d515b304b9 100644
--- a/docs/resource-validation/README.md
+++ b/docs/resource-validation/README.md
@@ -56,6 +56,43 @@ Policies can also reference rules in different rule sets as long as they are loa
 
 To see the full specifications, check the [example rule-set](../../examples/resource-validation/rule-set.yaml).
 
+### Alternative format: Custom Rules
+
+Rules and policies can also be given using [datree's Custom Rules](https://hub.datree.io/custom-rules/custom-rules-overview) format as part of a rule set.
+
+```yaml
+apiVersion: v1
+policies:
+  - name: TestPolicy
+    isDefault: true
+    rules:
+      - identifier: TEST
+        messageOnFailure: This is a test rule
+customRules:
+  - identifier: TEST
+    name: This is a test rule
+    defaultMessageOnFailure: This is a test rule
+    schema:
+      required:
+        - test
+      properties:
+        test:
+          type: object
+          required:
+            - hello
+          properties:
+            hello:
+              type: string
+              enum:
+                - kyma
+```
+
+## Download policies
+
+You can download the currently enabled policies.
+
+In the user preferences, go to **Clusters > Resource Validation**. Click on **Download** in the **Enabled Policies** section.
+
 ## Scan the cluster
 
 With the **CLUSTER_VALIDATION** [feature flag](../features.md) enabled, you can use these rules to scan existing resources in your cluster.
diff --git a/docs/resource-validation/assets/customize-policy-preferences.png b/docs/resource-validation/assets/customize-policy-preferences.png
index 2e12afed01..d0b924d241 100644
Binary files a/docs/resource-validation/assets/customize-policy-preferences.png and b/docs/resource-validation/assets/customize-policy-preferences.png differ
diff --git a/examples/resource-validation/custom-policies.yaml b/examples/resource-validation/custom-policies.yaml
new file mode 100644
index 0000000000..2bb51cff10
--- /dev/null
+++ b/examples/resource-validation/custom-policies.yaml
@@ -0,0 +1,28 @@
+# datree 'policy as code' format
+# Can be validated using datree command:
+# datree test --ignore-missing-schemas --no-record --policy-config examples/resource-validation/custom-policies.yaml examples/resource-validation/pod.yaml
+
+apiVersion: v1
+policies:
+  - name: TestPolicy
+    isDefault: true
+    rules:
+      - identifier: TEST
+        messageOnFailure: This is a test rule
+customRules:
+  - identifier: TEST
+    name: This is a test rule
+    defaultMessageOnFailure: This is a test rule
+    schema:
+      required:
+        - test
+      properties:
+        test:
+          type: object
+          required:
+            - hello
+          properties:
+            hello:
+              type: string
+              enum:
+                - kyma
diff --git a/public/i18n/en.yaml b/public/i18n/en.yaml
index e9674f2cd3..e3c0bdd6dd 100644
--- a/public/i18n/en.yaml
+++ b/public/i18n/en.yaml
@@ -219,6 +219,7 @@ common:
     copy: Copy
     create: Create
     delete: Delete
+    download: Download
     edit: Edit
     edit-yaml: Edit YAML
     generate-name: Generate
@@ -1334,6 +1335,8 @@ settings:
       customize: Customize
       validation-disabled: Resource validation is disabled
       no-policies-found: No policies found
+      download-error: Error while downloading rule set
+      rule-set-missing: No rule set found
     interaction:
       title: Cluster Interaction
   interface:
diff --git a/resources/resource-validation/rule-sets/kubernetes-pod-security-standards/rules.yaml b/resources/resource-validation/rule-sets/kubernetes-pod-security-standards/rules.yaml
index 20860d3200..85978fd7d9 100644
--- a/resources/resource-validation/rule-sets/kubernetes-pod-security-standards/rules.yaml
+++ b/resources/resource-validation/rule-sets/kubernetes-pod-security-standards/rules.yaml
@@ -346,7 +346,6 @@ rules:
               properties:
                 runAsNonRoot:
                   enum:
-                    - null
                     - null
                     - true
         validSpec:
@@ -472,7 +471,6 @@ rules:
                   properties:
                     type:
                       enum:
-                        - null
                         - null
                         - RuntimeDefault
                         - Localhost
diff --git a/src/components/Preferences/ResourceValidation/ResourceValidationSettings.tsx b/src/components/Preferences/ResourceValidation/ResourceValidationSettings.tsx
index 0a4a4718eb..aabcfb8343 100644
--- a/src/components/Preferences/ResourceValidation/ResourceValidationSettings.tsx
+++ b/src/components/Preferences/ResourceValidation/ResourceValidationSettings.tsx
@@ -1,4 +1,6 @@
 import { useTranslation } from 'react-i18next';
+import jsyaml from 'js-yaml';
+import { saveAs } from 'file-saver';
 import { useRecoilState, useRecoilValue } from 'recoil';
 import { Button, LayoutPanel, Switch } from 'fundamental-react';
 import {
@@ -6,12 +8,17 @@ import {
   validateResourcesState,
 } from 'state/preferences/validateResourcesAtom';
 import { validationSchemasState } from 'state/validationSchemasAtom';
-import { useMemo } from 'react';
+import { useCallback, useMemo } from 'react';
 import { GenericList } from 'shared/components/GenericList/GenericList';
 
 import './ResourceValidationSettings.scss';
 import { useFeature } from 'hooks/useFeature';
-import { ValidationFeatureConfig } from 'state/validationEnabledSchemasAtom';
+import {
+  convertPoliciesForDatree,
+  usePolicySet,
+  ValidationFeatureConfig,
+} from 'state/validationEnabledSchemasAtom';
+import { useNotification } from 'shared/contexts/NotificationContext';
 
 export default function ResourceValidationSettings() {
   const { t } = useTranslation();
@@ -39,6 +46,34 @@ export default function ResourceValidationSettings() {
     [validationSchemas],
   );
 
+  const policySet = usePolicySet();
+  const notification = useNotification();
+
+  const download = useCallback(() => {
+    if (validationSchemas) {
+      try {
+        const customPolicyDefinition = convertPoliciesForDatree(
+          validationSchemas,
+          policySet,
+        );
+        const kubeconfigYaml = jsyaml.dump(customPolicyDefinition);
+        const blob = new Blob([kubeconfigYaml], {
+          type: 'application/yaml;charset=utf-8',
+        });
+        saveAs(blob, `customPolicies.yaml`);
+      } catch (e) {
+        console.error(e);
+        notification.notifyError({
+          content: t('settings.clusters.resourcesValidation.download-error'),
+        });
+      }
+    } else {
+      notification.notifyError({
+        content: t('settings.clusters.resourcesValidation.rule-set-missing'),
+      });
+    }
+  }, [validationSchemas, policySet, notification, t]);
+
   const policyList = useMemo(() => {
     const selectedPolicySet = selectedPolicies.reduce(
       (agg, name) => agg.add(name),
@@ -182,6 +217,14 @@ export default function ResourceValidationSettings() {
                       {t('settings.clusters.resourcesValidation.reset')}
                     </Button>
                   )}
+                  <Button
+                    option="transparent"
+                    glyph="download"
+                    className="fd-margin-begin--sm"
+                    onClick={download}
+                  >
+                    {t('common.buttons.download')}
+                  </Button>
                 </>
               }
               searchSettings={{
diff --git a/src/state/validationEnabledSchemasAtom.ts b/src/state/validationEnabledSchemasAtom.ts
index b1e7bcdb2b..6d4cca7acd 100644
--- a/src/state/validationEnabledSchemasAtom.ts
+++ b/src/state/validationEnabledSchemasAtom.ts
@@ -9,6 +9,8 @@ import {
 import {
   emptyValidationSchema,
   getEnabledRules,
+  getResolvedPolicy,
+  DatreeCustomRule,
   ValidationSchema,
   validationSchemasState,
 } from './validationSchemasAtom';
@@ -22,6 +24,85 @@ export type ValidationFeatureConfig = {
   };
 };
 
+type DatreeCustomPolicies = {
+  apiVersion: string;
+  policies: {
+    name: string;
+    isDefault: boolean;
+    rules: {
+      identifier: string;
+      messageOnFailure: string;
+    }[];
+  }[];
+  customRules: DatreeCustomRule[];
+};
+
+/**
+ * The datree format differs between its own rules and the custom rules via 'policy as code'.
+ * This function converts the rules of a given rule set and selected policies into a format,
+ * which can be used in datree via the --policy-config option.
+ */
+export const convertPoliciesForDatree = (
+  validationSchemas: ValidationSchema,
+  policySet: Set<string>,
+): DatreeCustomPolicies => {
+  const enabledSchemas = getValidationEnabledSchemas(
+    validationSchemas,
+    policySet,
+  );
+
+  const customRules = enabledSchemas.rules.map(
+    ({ uniqueName, name, schema, messageOnFailure }) => {
+      return {
+        identifier: uniqueName,
+        name: name ?? uniqueName,
+        defaultMessageOnFailure:
+          messageOnFailure ?? `Rule ${uniqueName} failed`,
+        schema,
+      };
+    },
+  );
+
+  const policies = enabledSchemas.policies.map(policy => {
+    const resolvedPolicy = getResolvedPolicy(
+      policy,
+      validationSchemas.policies,
+    );
+    const rules = resolvedPolicy.rules.map(rule => {
+      if (typeof rule === 'string') {
+        const messageOnFailure =
+          customRules.find(({ identifier }) => identifier)
+            ?.defaultMessageOnFailure || `Rule ${rule} failed`;
+        return {
+          identifier: rule,
+          messageOnFailure,
+        };
+      } else {
+        return {
+          identifier: rule.identifier,
+          messageOnFailure: rule.messageOnFailure ?? `Rule ${rule} failed`,
+        };
+      }
+    });
+
+    return {
+      name: resolvedPolicy.name,
+      isDefault: false,
+      rules,
+    };
+  });
+  if (policies.length > 0) {
+    policies[0].isDefault = true;
+  }
+
+  const customPolicyDefinition = {
+    apiVersion: 'v1',
+    policies,
+    customRules,
+  };
+  return customPolicyDefinition;
+};
+
 const getEnabledPolicyNames = (
   validationFeature: ValidationFeatureConfig,
   validationPreferences: ExtendedValidateResources,
diff --git a/src/state/validationSchemasAtom.ts b/src/state/validationSchemasAtom.ts
index d46ce26705..c5527bd31f 100644
--- a/src/state/validationSchemasAtom.ts
+++ b/src/state/validationSchemasAtom.ts
@@ -15,6 +15,7 @@ import { FetchFn } from 'shared/hooks/BackendAPI/useFetch';
 
 type Rule = {
   uniqueName: string;
+  name?: string;
   messageOnFailure?: string;
   documentationUrl?: string;
   category?: string;
@@ -22,9 +23,17 @@ type Rule = {
   schema: JSONSchema4;
 };
 
+export type DatreeCustomRule = {
+  identifier: string;
+  name: string;
+  defaultMessageOnFailure: string;
+  schema: JSONSchema4;
+};
+
 type ValidationConfig = {
   rules?: Array<Rule>;
   policies?: Array<ValidationPolicy>;
+  customRules?: Array<DatreeCustomRule>;
 };
 
 export type ValidationSchema = {
@@ -41,6 +50,7 @@ type RuleReference =
   | string
   | {
       identifier: string;
+      messageOnFailure?: string;
     };
 
 type ValidationPolicy = {
@@ -50,6 +60,20 @@ type ValidationPolicy = {
   rules: Array<RuleReference>;
 };
 
+const convertCustomRules = (customRules?: DatreeCustomRule[]): Rule[] => {
+  if (!customRules) return [];
+  return customRules?.map(
+    ({ identifier, name, defaultMessageOnFailure, schema }) => {
+      return {
+        uniqueName: identifier,
+        name,
+        messageOnFailure: defaultMessageOnFailure,
+        schema,
+      };
+    },
+  );
+};
+
 const fetchBaseValidationConfig = async (): Promise<ValidationConfig[]> => {
   try {
     const response = await fetch(`/resource-validation/rule-set.yaml`);
@@ -104,9 +128,13 @@ const fetchValidationConfig = async (
     permissionSet,
   );
 
-  const rules = [...validationConfig, ...configFromConfigMap].flatMap(
-    schema => schema.rules ?? [],
-  );
+  const rules = [
+    ...validationConfig,
+    ...configFromConfigMap,
+  ].flatMap(schema => [
+    ...(schema.rules ?? []),
+    ...convertCustomRules(schema.customRules),
+  ]);
 
   const policies = [...validationConfig, ...configFromConfigMap].flatMap(
     schema => schema.policies ?? [],
@@ -115,6 +143,14 @@ const fetchValidationConfig = async (
   return { rules, policies };
 };
 
+const getPolicyMap = (policies?: ValidationPolicy[]) => {
+  return (
+    policies?.reduce((agg, policy) => {
+      return agg.set(policy.name, policy);
+    }, new Map()) ?? (new Map() as Map<string, ValidationPolicy>)
+  );
+};
+
 const getRuleKey = (rule: RuleReference) => {
   return typeof rule === 'string' ? rule : rule.identifier;
 };
@@ -152,6 +188,17 @@ const resolveRulesForPolicy = (
   return [...rules, ...additionalRules];
 };
 
+export const getResolvedPolicy = (
+  policy: ValidationPolicy,
+  allPolicies: ValidationPolicy[],
+) => {
+  const policyMap = getPolicyMap(allPolicies);
+  return {
+    ...policy,
+    rules: resolveRulesForPolicy(policy, policyMap),
+  };
+};
+
 export const getEnabledRules = (
   rules: Rule[],
   selectedPolicies: ValidationPolicy[],
@@ -162,10 +209,7 @@ export const getEnabledRules = (
     {},
   ) as { [key: string]: Rule };
 
-  const policyMap =
-    allPolicies?.reduce((agg, policy) => {
-      return agg.set(policy.name, policy);
-    }, new Map()) ?? (new Map() as Map<string, ValidationPolicy>);
+  const policyMap = getPolicyMap(allPolicies);
 
   const enabledRulesByName = selectedPolicies.reduce((agg, policy) => {
     const policyRules = resolveRulesForPolicy(policy, policyMap);
diff --git a/tests/integration/tests/namespace/test-resource-validation.spec.js b/tests/integration/tests/namespace/test-resource-validation.spec.js
index 38f4bf254a..653ee942d0 100644
--- a/tests/integration/tests/namespace/test-resource-validation.spec.js
+++ b/tests/integration/tests/namespace/test-resource-validation.spec.js
@@ -1,3 +1,6 @@
+import path from 'path';
+import jsyaml from 'js-yaml';
+
 context('Test resource validation', () => {
   Cypress.skipAfterFail();
 
@@ -123,6 +126,73 @@ context('Test resource validation', () => {
     cy.contains('Close').click();
   });
 
+  it('Download and reupload policies', () => {
+    cy.get('[aria-label="topnav-profile-btn"]').click();
+
+    cy.contains('Preferences').click();
+
+    cy.contains('Clusters').click();
+
+    cy.contains('Resource Validation').click();
+
+    cy.contains('Customize').click();
+
+    cy.contains('.policy-row', 'Default')
+      .find('.fd-switch')
+      .click();
+
+    cy.contains('.policy-row', 'TestPolicy')
+      .find('.fd-switch')
+      .click();
+
+    cy.contains('Download').click();
+
+    const downloadsFolder = Cypress.config('downloadsFolder');
+    cy.readFile(path.join(downloadsFolder, 'customPolicies.yaml'))
+      .then(downloadedYaml => {
+        cy.fixture('examples/resource-validation/custom-policies.yaml')
+          .then(customPolicies => jsyaml.load(customPolicies))
+          .should('deep.equal', jsyaml.load(downloadedYaml));
+        return cy.wrap(downloadedYaml);
+      })
+      .then(downloadedYaml => {
+        cy.mockConfigMap({
+          label: 'busola.io/resource-validation=rule-set',
+          data: downloadedYaml,
+        });
+
+        return cy.reload();
+      });
+
+    cy.contains('Upload YAML').click();
+
+    cy.fixture('examples/resource-validation/pod.yaml').then(podConfig => {
+      cy.pasteToMonaco(podConfig);
+    });
+
+    cy.contains('nginx:latest').should('be.visible');
+
+    cy.contains('Show warnings')
+      .should('be.visible')
+      .click();
+
+    cy.contains('This is a test rule').should('be.visible');
+
+    cy.contains('Cancel').click();
+
+    cy.get('[aria-label="topnav-profile-btn"]').click();
+
+    cy.contains('Preferences').click();
+
+    cy.contains('Clusters').click();
+
+    cy.contains('Resource Validation').click();
+
+    cy.contains('Reset').click();
+
+    cy.contains('Close').click();
+  });
+
   it('Customize resource validation policies via feature flag', () => {
     cy.setBusolaFeature('RESOURCE_VALIDATION', true, {
       config: {