diff --git a/src/generator/01-base/static/queriesWithFilter.ts.txt b/src/generator/01-base/static/queriesWithFilter.ts.txt
index 263c086..b5cc578 100644
--- a/src/generator/01-base/static/queriesWithFilter.ts.txt
+++ b/src/generator/01-base/static/queriesWithFilter.ts.txt
@@ -37,7 +37,7 @@ export type CountQuery<F> = {
 
 export type SomeQuery<E, F, I, P> = {
   serializeNulls?: boolean;
-  include?: QuerySelect<I>;
+  include?: I;
   properties?: P;
   filter?: QueryFilter<F> & CustomAttributeFilter;
   select?: QuerySelect<E>;
@@ -178,7 +178,7 @@ const _some = (
       includeReferencedEntities: query?.include
         ? usePost
           ? Object.keys(query.include)
-          : Object.keys(query.include).join(',')
+          : flattenIncludedReferences(query.include).join(',')
         : undefined,
       ...flattenOrFilter(query?.or),
       ...flattenFilter(query?.filter),
diff --git a/src/generator/01-base/static/queriesWithQueryLanguage.ts.txt b/src/generator/01-base/static/queriesWithQueryLanguage.ts.txt
index 028c5d6..fb90dc8 100644
--- a/src/generator/01-base/static/queriesWithQueryLanguage.ts.txt
+++ b/src/generator/01-base/static/queriesWithQueryLanguage.ts.txt
@@ -163,7 +163,7 @@ export type CountQuery<F> = {
 
 type SomeQueryBase<E, F, I, P> = {
   serializeNulls?: boolean;
-  include?: QuerySelect<I>;
+  include?: I;
   properties?: P;
   where?: QueryFilter<F>;
   select?: QuerySelect<E>;
@@ -387,7 +387,7 @@ const _some = (
     includeReferencedEntities: query?.include
       ? usePost
           ? Object.keys(query.include)
-          : Object.keys(query.include).join(',')
+          : flattenIncludedReferences(query.include).join(',')
         : undefined,
     ...assembleFilterParam(query?.where),
     ...flattenSort(query?.sort, usePost),
diff --git a/src/generator/01-base/static/types.ts.txt b/src/generator/01-base/static/types.ts.txt
index 56986e4..2e5e7e8 100644
--- a/src/generator/01-base/static/types.ts.txt
+++ b/src/generator/01-base/static/types.ts.txt
@@ -62,9 +62,9 @@ export type UniqueQuery = {
   serializeNulls?: boolean;
 };
 
-export type SomeQueryReturn<E, R, P> = {
+export type SomeQueryReturn<E, P> = {
   entities: E[];
-  references?: R;
+  references?: ReferencedEntities;
   properties?: P[];
 };
 
diff --git a/src/generator/01-base/static/utils.ts.txt b/src/generator/01-base/static/utils.ts.txt
index 9cdba28..cdc4b97 100644
--- a/src/generator/01-base/static/utils.ts.txt
+++ b/src/generator/01-base/static/utils.ts.txt
@@ -12,6 +12,22 @@ const flattenSelect = (obj: Select<any, any> = {}): string[] => {
   return entries;
 };
 
+const flattenIncludedReferences = (obj: Record<any, any> = {}, base = ''): string[] => {
+  const entries: string[] = [];
+
+  for (const [prop, value] of Object.entries(obj)) {
+    const path = base ? `${base}.${prop}` : prop;
+
+    if (typeof value === 'object' && value) {
+      entries.push(...flattenIncludedReferences(value as Record<any, any>, path));
+    } else if (value) {
+      entries.push(path);
+    }
+  }
+
+  return entries;
+};
+
 export const flattenSort = (obj: Sort<any>[] = [], usePost?: boolean):
 { sort?: string } | { orderBy?: string[] } | Record<string, never> => {
   const flatten = (obj: Sort<any>, base = ''): string | undefined => {
diff --git a/src/generator/03-entities/index.ts b/src/generator/03-entities/index.ts
index a85d70e..8b52b28 100644
--- a/src/generator/03-entities/index.ts
+++ b/src/generator/03-entities/index.ts
@@ -1,12 +1,12 @@
 import { extractPropertyMetaData, PropertyMetaData } from '@generator/03-entities/utils/extractPropertyMetaData';
-import { generateInterface, InterfaceProperty } from '@ts/generateInterface';
+import { logger } from '@logger';
+import { generateInterface, generateInterfaceType, InterfaceProperty } from '@ts/generateInterface';
 import { generateStatements } from '@ts/generateStatements';
 import { loosePascalCase } from '@utils/case';
 import { convertToTypeScriptType, createReferenceType, getRefName } from '@utils/openapi/convertToTypeScriptType';
 import { ExtendedSchema, isEnumSchemaObject, isReferenceObject } from '@utils/openapi/guards';
-import { OpenAPIV3 } from 'openapi-types';
-import { logger } from '@logger';
 import { OpenApiContext } from '@utils/weclapp/extractContext';
+import { OpenAPIV3 } from 'openapi-types';
 
 export interface GeneratedEntity {
   name: string;
@@ -144,3 +144,30 @@ export const generateEntities = (context: OpenApiContext): Map<string, Generated
 
   return entities;
 };
+
+export const generateReferencedEntities = (
+  entities: Map<string, GeneratedEntity>,
+  aliases: Map<string, string>,
+  services: Map<string, { name: string }>
+) => {
+  const aliasKeys = new Set(aliases.keys());
+  const serviceKeys = new Set(services.keys());
+
+  return generateInterfaceType(
+    'ReferencedEntities',
+    [
+      ...[...entities.values()]
+        .filter((entity) => aliasKeys.has(entity.name) && serviceKeys.has(entity.name))
+        .map((entity) => ({
+          name: entity.name,
+          type: `${entity.interfaceName}[]`
+        })),
+      ...[...aliases.entries()]
+        .filter(([, alias]) => alias === 'customValue')
+        .map(([entityName]) => ({
+          name: entityName,
+          type: 'CustomValue[]'
+        }))
+    ].sort((a, b) => a.name.localeCompare(b.name))
+  );
+};
diff --git a/src/generator/04-services/endpoints/some.ts b/src/generator/04-services/endpoints/some.ts
index 0986d35..3d98888 100644
--- a/src/generator/04-services/endpoints/some.ts
+++ b/src/generator/04-services/endpoints/some.ts
@@ -2,6 +2,7 @@ import { GeneratedServiceFunction, ServiceFunctionGenerator } from '@generator/0
 import { generateArrowFunction } from '@ts/generateArrowFunction';
 import { generateArrowFunctionType } from '@ts/generateArrowFunctionType';
 import { generateInterfaceFromObject, generateInterfaceType, InterfaceProperty } from '@ts/generateInterface';
+import { generateObject, ObjectProperty } from '@ts/generateObject';
 import { generateString } from '@ts/generateString';
 import { generateTupleArray } from '@ts/generateTupleArray';
 import { generateType } from '@ts/generateType';
@@ -46,46 +47,99 @@ const resolveAdditionalPropertiesSchema = (
   return undefined;
 };
 
-const resolveReferences = (entity: string, entities: Map<string, GeneratedEntity>) => {
-  const references: InterfaceProperty[] = [];
+const resolveArrayReferenceProperties = (
+  entity: string,
+  entities: Map<string, GeneratedEntity>,
+  visitedEntities = new Set<string>()
+): ObjectProperty[] => {
+  if (!entity || visitedEntities.has(entity)) {
+    return [];
+  }
+
   const generatedEntity = entities.get(entity);
-  if (generatedEntity) {
-    for (const [property, propertyMetaData] of generatedEntity.properties) {
-      if (propertyMetaData.service) {
-        references.push({
-          name: property,
-          type: generateString(propertyMetaData.service),
-          required: true
-        });
+  if (!generatedEntity) {
+    return [];
+  }
+
+  const nextVisitedEntities = new Set(visitedEntities);
+  nextVisitedEntities.add(entity);
+
+  const properties: ObjectProperty[] = [...generatedEntity.properties.entries()].flatMap(
+    ([property, propertyMetaData]): ObjectProperty[] => {
+      if (propertyMetaData.type === 'array') {
+        if (propertyMetaData.entity === 'onlyId') {
+          return [{ key: property, value: [{ key: 'id', value: 'boolean' }] }];
+        }
+
+        if (!propertyMetaData.entity) {
+          return [];
+        }
+
+        const nestedProperties = resolveArrayReferenceProperties(
+          propertyMetaData.entity,
+          entities,
+          nextVisitedEntities
+        );
+
+        if (!nestedProperties.length) {
+          return [];
+        }
+
+        return [{ key: property, value: nestedProperties }];
       }
+
+      if (property.endsWith('Id')) {
+        return [{ key: property, value: 'boolean' }];
+      }
+
+      return [];
     }
-    if (generatedEntity.parentName) {
-      references.push(...resolveReferences(generatedEntity.parentName, entities));
-    }
+  );
+
+  if (generatedEntity.parentName) {
+    properties.push(...resolveArrayReferenceProperties(generatedEntity.parentName, entities, nextVisitedEntities));
   }
-  return references;
+
+  return properties;
 };
 
-const resolveReferencedEntities = (entity: string, entities: Map<string, GeneratedEntity>) => {
-  const referencedEntities: InterfaceProperty[] = [];
+const resolveReferences = (entity: string, entities: Map<string, GeneratedEntity>) => {
+  const references: InterfaceProperty[] = [];
   const generatedEntity = entities.get(entity);
   if (generatedEntity) {
-    for (const [, propertyMetaData] of generatedEntity.properties) {
-      if (propertyMetaData.service && propertyMetaData.entity) {
-        const referencedEntity = entities.get(propertyMetaData.entity);
-        if (referencedEntity)
-          referencedEntities.push({
-            name: propertyMetaData.service,
-            type: `${referencedEntity.interfaceName}[]`,
-            required: true
+    for (const [property, propertyMetaData] of generatedEntity.properties) {
+      if (property === 'customAttributes') continue;
+
+      if (propertyMetaData.type === 'array') {
+        if (propertyMetaData.entity === 'onlyId') {
+          references.push({
+            name: property,
+            type: generateObject([{ key: 'id', value: 'boolean' }])
           });
+        } else {
+          const nestedProperties = resolveArrayReferenceProperties(propertyMetaData.entity || '', entities);
+          if (nestedProperties.length) {
+            references.push({
+              name: property,
+              type: generateObject(nestedProperties)
+            });
+          }
+        }
+      } else {
+        if (propertyMetaData.service) {
+          references.push({
+            name: property,
+            type: 'boolean'
+          });
+        }
       }
     }
     if (generatedEntity.parentName) {
-      referencedEntities.push(...resolveReferencedEntities(generatedEntity.parentName, entities));
+      references.push(...resolveReferences(generatedEntity.parentName, entities));
     }
   }
-  return referencedEntities;
+
+  return references;
 };
 
 export const generateSomeEndpoint: ServiceFunctionGenerator = ({
@@ -134,12 +188,6 @@ export const generateSomeEndpoint: ServiceFunctionGenerator = ({
     `SomeQuery<${relatedEntity.interfaceName}, ${filterTypeName}, ${referencesTypeName}, ${additionalPropertyTypeName}> & ${parametersTypeName}`
   );
 
-  const referencedEntitiesTypeName = `${functionTypeName}_ReferencedEntities`;
-  const referencedEntitiesTypeSource = generateInterfaceType(
-    referencedEntitiesTypeName,
-    resolveReferencedEntities(endpoint.service, entities)
-  );
-
   const additionalPropertiesTypeName = `${functionTypeName}_AdditionalProperties`;
 
   const additionalPropertiesTypeSource = generateType(
@@ -150,7 +198,7 @@ export const generateSomeEndpoint: ServiceFunctionGenerator = ({
   const functionTypeSource = generateArrowFunctionType({
     type: functionTypeName,
     params: [`query${parametersType.isFullyOptional() ? '?' : ''}: ${queryTypeName}, requestOptions?: RequestOptions`],
-    returns: `${resolveResponseType(options.target)}<SomeQueryReturn<${relatedEntity.interfaceName}, ${referencedEntitiesTypeName}, ${additionalPropertiesTypeName}>>`
+    returns: `${resolveResponseType(options.target)}<SomeQueryReturn<${relatedEntity.interfaceName}, ${additionalPropertiesTypeName}>>`
   });
 
   const functionSource = generateArrowFunction({
@@ -170,7 +218,6 @@ export const generateSomeEndpoint: ServiceFunctionGenerator = ({
       { name: referencesTypeName, source: referencesTypeSource },
       { name: additionalPropertyTypeName, source: additionalPropertyTypeSource },
       { name: queryTypeName, source: queryTypeSource },
-      { name: referencedEntitiesTypeName, source: referencedEntitiesTypeSource },
       { name: additionalPropertiesTypeName, source: additionalPropertiesTypeSource }
     ]
   };
diff --git a/src/generator/generate.ts b/src/generator/generate.ts
index 36d5a76..220a4c4 100644
--- a/src/generator/generate.ts
+++ b/src/generator/generate.ts
@@ -1,13 +1,13 @@
-import { Target } from '../target';
 import { generateBase } from '@generator/01-base';
 import { generateEnums } from '@generator/02-enums';
-import { generateEntities } from '@generator/03-entities';
+import { generateEntities, generateReferencedEntities } from '@generator/03-entities';
 import { generateServices } from '@generator/04-services';
 import { generateMaps } from '@generator/05-maps';
 import { generateBlockComment } from '@ts/generateComment';
 import { generateStatements } from '@ts/generateStatements';
 import { extractContext } from '@utils/weclapp/extractContext';
 import { OpenAPIV3 } from 'openapi-types';
+import { Target } from '../target';
 
 export interface GeneratorOptions {
   /* Generate unique methods as well. */
@@ -34,6 +34,7 @@ export const generate = (doc: OpenAPIV3.Document, options: GeneratorOptions): st
     generateBlockComment('ENUMS', generateStatements(...[...enums.values()].map((v) => v.source))),
     generateBlockComment('ENTITIES', generateStatements(...[...entities.values()].map((v) => v.source))),
     generateBlockComment('FILTERS', generateStatements(...[...entities.values()].map((v) => v.filterSource))),
+    generateBlockComment('REFERENCED ENTITIES', generateReferencedEntities(entities, context.aliases, services)),
     generateBlockComment('SERVICES', generateStatements(...[...services.values()].map((v) => v.source))),
     generateBlockComment('MAPS', maps)
   );