diff --git a/packages/medusa/src/loaders/__tests__/module.spec.ts b/packages/medusa/src/loaders/__tests__/module.spec.ts
index d8a544cb00..f07ba400d9 100644
--- a/packages/medusa/src/loaders/__tests__/module.spec.ts
+++ b/packages/medusa/src/loaders/__tests__/module.spec.ts
@@ -95,6 +95,10 @@ describe("modules loader", () => {
             resources: MODULE_RESOURCE_TYPE.SHARED,
           },
         },
+        moduleDeclaration: {
+          scope: MODULE_SCOPE.INTERNAL,
+          resources: MODULE_RESOURCE_TYPE.SHARED,
+        },
       },
     }
 
@@ -123,6 +127,10 @@ describe("modules loader", () => {
             resources: MODULE_RESOURCE_TYPE.SHARED,
           },
         },
+        moduleDeclaration: {
+          scope: MODULE_SCOPE.INTERNAL,
+          resources: MODULE_RESOURCE_TYPE.SHARED,
+        },
       },
     }
 
@@ -162,6 +170,10 @@ describe("modules loader", () => {
             resources: MODULE_RESOURCE_TYPE.SHARED,
           },
         },
+        moduleDeclaration: {
+          scope: MODULE_SCOPE.INTERNAL,
+          resources: MODULE_RESOURCE_TYPE.SHARED,
+        },
       },
     }
 
@@ -194,6 +206,10 @@ describe("modules loader", () => {
             resources: MODULE_RESOURCE_TYPE.SHARED,
           },
         },
+        moduleDeclaration: {
+          scope: MODULE_SCOPE.INTERNAL,
+          resources: MODULE_RESOURCE_TYPE.SHARED,
+        },
       },
     }
 
@@ -228,6 +244,10 @@ describe("modules loader", () => {
             resources: MODULE_RESOURCE_TYPE.SHARED,
           },
         },
+        moduleDeclaration: {
+          scope: MODULE_SCOPE.INTERNAL,
+          resources: MODULE_RESOURCE_TYPE.SHARED,
+        },
       },
     }
 
@@ -242,4 +262,74 @@ describe("modules loader", () => {
       )
     }
   })
+
+  it("throws error if no scope is defined to the module", async () => {
+    expect.assertions(1)
+    const moduleResolutions: Record<string, ModuleResolution> = {
+      testService: {
+        resolutionPath: "@modules/no-service",
+        definition: {
+          registrationName: "testService",
+          key: "testService",
+          defaultPackage: "testService",
+          label: "TestService",
+          isRequired: true,
+          defaultModuleDeclaration: {
+            scope: MODULE_SCOPE.INTERNAL,
+            resources: MODULE_RESOURCE_TYPE.SHARED,
+          },
+        },
+        // @ts-ignore
+        moduleDeclaration: {
+          resources: MODULE_RESOURCE_TYPE.SHARED,
+        },
+      },
+    }
+
+    const configModule = buildConfigModule({
+      moduleResolutions,
+    })
+    try {
+      await registerModules({ container, configModule, logger: Logger })
+    } catch (err) {
+      expect(err.message).toEqual(
+        "The module TestService has to define its scope (internal | external)"
+      )
+    }
+  })
+
+  it("throws error if resources is not set when scope is defined as internal", async () => {
+    expect.assertions(1)
+    const moduleResolutions: Record<string, ModuleResolution> = {
+      testService: {
+        resolutionPath: "@modules/no-service",
+        definition: {
+          registrationName: "testService",
+          key: "testService",
+          defaultPackage: "testService",
+          label: "TestService",
+          isRequired: true,
+          defaultModuleDeclaration: {
+            scope: MODULE_SCOPE.INTERNAL,
+            resources: MODULE_RESOURCE_TYPE.SHARED,
+          },
+        },
+        // @ts-ignore
+        moduleDeclaration: {
+          scope: MODULE_SCOPE.INTERNAL,
+        },
+      },
+    }
+
+    const configModule = buildConfigModule({
+      moduleResolutions,
+    })
+    try {
+      await registerModules({ container, configModule, logger: Logger })
+    } catch (err) {
+      expect(err.message).toEqual(
+        "The module TestService is missing its resources config"
+      )
+    }
+  })
 })
diff --git a/packages/medusa/src/loaders/module.ts b/packages/medusa/src/loaders/module.ts
index f5071e88aa..8c882c1429 100644
--- a/packages/medusa/src/loaders/module.ts
+++ b/packages/medusa/src/loaders/module.ts
@@ -22,9 +22,27 @@ const registerModule = async (
   configModule: ConfigModule,
   logger: Logger
 ): Promise<{ error?: Error } | void> => {
+  const constainerName = resolution.definition.registrationName
+
+  const { scope, resources } = resolution.moduleDeclaration ?? {}
+  if (!scope || (scope === MODULE_SCOPE.INTERNAL && !resources)) {
+    let message = `The module ${resolution.definition.label} has to define its scope (internal | external)`
+    if (scope && !resources) {
+      message = `The module ${resolution.definition.label} is missing its resources config`
+    }
+
+    container.register({
+      [constainerName]: asValue(false),
+    })
+
+    return {
+      error: new Error(message),
+    }
+  }
+
   if (!resolution.resolutionPath) {
     container.register({
-      [resolution.definition.registrationName]: asValue(false),
+      [constainerName]: asValue(false),
     })
 
     return
@@ -48,8 +66,8 @@ const registerModule = async (
   }
 
   if (
-    resolution.moduleDeclaration?.scope === MODULE_SCOPE.INTERNAL &&
-    resolution.moduleDeclaration?.resources === MODULE_RESOURCE_TYPE.SHARED
+    scope === MODULE_SCOPE.INTERNAL &&
+    resources === MODULE_RESOURCE_TYPE.SHARED
   ) {
     const moduleModels = loadedModule?.models || null
     if (moduleModels) {
@@ -61,7 +79,7 @@ const registerModule = async (
 
   // TODO: "cradle" should only contain dependent Modules and the EntityManager if module scope is shared
   container.register({
-    [resolution.definition.registrationName]: asFunction((cradle) => {
+    [constainerName]: asFunction((cradle) => {
       return new moduleService(
         cradle,
         resolution.options,