diff --git a/.changeset/rude-years-melt.md b/.changeset/rude-years-melt.md
new file mode 100644
index 000000000..368c9fd95
--- /dev/null
+++ b/.changeset/rude-years-melt.md
@@ -0,0 +1,5 @@
+---
+'houdini': patch
+---
+
+Fix bug when inserting data into abstract list
diff --git a/packages/houdini/src/codegen/transforms/lists.test.ts b/packages/houdini/src/codegen/transforms/lists.test.ts
index cb4162f66..0aaca9364 100644
--- a/packages/houdini/src/codegen/transforms/lists.test.ts
+++ b/packages/houdini/src/codegen/transforms/lists.test.ts
@@ -479,8 +479,8 @@ test('cannot use list directive if id is not a valid field', async function () {
 	} catch (error: unknown) {
 		nbError++
 		// @ts-ignore
-		expect(error[0].description).toMatchInlineSnapshot(
-			'"@list on Legend as a configuration issue. Object identification missing: \\"id\\". Check \'Custom IDs\' if needed."'
+		expect(error[0].message).toMatchInlineSnapshot(
+			'"@list on Legend has a configuration issue: Legend dos not have a valid key. Please check this link for more information: https://houdinigraphql.com/guides/caching-data#custom-ids"'
 		)
 	}
 	expect(nbError).toBe(1)
diff --git a/packages/houdini/src/codegen/validators/typeCheck.ts b/packages/houdini/src/codegen/validators/typeCheck.ts
index e026e32e5..a5a0b4a10 100755
--- a/packages/houdini/src/codegen/validators/typeCheck.ts
+++ b/packages/houdini/src/codegen/validators/typeCheck.ts
@@ -1,4 +1,4 @@
-import { logGreen, logYellow } from '@kitql/helper'
+import { logGreen } from '@kitql/helper'
 import * as graphql from 'graphql'
 
 import {
@@ -263,16 +263,15 @@ export default async function typeCheck(config: Config, docs: Document[]): Promi
 						.filter((fieldName) => !targetType.getFields()[fieldName])
 
 					if (missingIDFields.length > 0) {
-						const message = `@${config.listDirective} on ${logGreen(
-							targetType.name
-						)} as a configuration issue. Object identification missing: ${missingIDFields
-							.map((c) => `"${logYellow(c)}"`)
-							.join(', ')}. Check 'Custom IDs' if needed.`
 						errors.push(
 							new HoudiniError({
 								filepath: filename,
-								message,
-								description: message,
+								message:
+									`@${config.listDirective} on ${logGreen(
+										targetType.name
+									)} has a configuration issue: ` +
+									`${targetType} dos not have a valid key. ` +
+									`Please check this link for more information: https://houdinigraphql.com/guides/caching-data#custom-ids`,
 							})
 						)
 						return
diff --git a/packages/houdini/src/runtime/cache/lists.ts b/packages/houdini/src/runtime/cache/lists.ts
index 957d8e01a..9e4edbf3b 100644
--- a/packages/houdini/src/runtime/cache/lists.ts
+++ b/packages/houdini/src/runtime/cache/lists.ts
@@ -260,6 +260,10 @@ export class List {
 									updates: ['append', 'prepend'],
 									selection: {
 										fields: {
+											__typename: {
+												keyRaw: '__typename',
+												type: 'String',
+											},
 											node: {
 												type: listType,
 												keyRaw: 'node',
@@ -284,7 +288,15 @@ export class List {
 			}
 			insertData = {
 				newEntry: {
-					edges: [{ node: { ...data, __typename: listType } }],
+					edges: [
+						{
+							__typename: listType + 'Edge',
+							node: {
+								...data,
+								__typename: listType,
+							},
+						},
+					],
 				},
 			}
 		} else {
diff --git a/packages/houdini/src/runtime/cache/tests/list.test.ts b/packages/houdini/src/runtime/cache/tests/list.test.ts
index e9556fefd..67ba1ec95 100644
--- a/packages/houdini/src/runtime/cache/tests/list.test.ts
+++ b/packages/houdini/src/runtime/cache/tests/list.test.ts
@@ -1300,6 +1300,11 @@ test('append in connection', function () {
 										keyRaw: 'edges',
 										selection: {
 											fields: {
+												__typename: {
+													type: 'String',
+													visible: true,
+													keyRaw: '__typename',
+												},
 												node: {
 													type: 'Node',
 													visible: true,
@@ -1346,6 +1351,7 @@ test('append in connection', function () {
 				friends: {
 					edges: [
 						{
+							__typename: 'UserEdge',
 							node: {
 								__typename: 'User',
 								id: '2',
@@ -1389,6 +1395,7 @@ test('append in connection', function () {
 			friends: {
 				edges: [
 					{
+						__typename: 'UserEdge',
 						node: {
 							__typename: 'User',
 							id: '2',
@@ -1396,6 +1403,7 @@ test('append in connection', function () {
 						},
 					},
 					{
+						__typename: 'UserEdge',
 						node: {
 							__typename: 'User',
 							id: '3',
@@ -1406,6 +1414,41 @@ test('append in connection', function () {
 			},
 		},
 	})
+
+	// make sure we set an typename on the edge (so it has a value when we read back)
+	expect(
+		cache.read({
+			selection,
+		})
+	).toEqual({
+		data: {
+			viewer: {
+				id: '1',
+				friends: {
+					edges: [
+						{
+							__typename: 'UserEdge',
+							node: {
+								__typename: 'User',
+								id: '2',
+								firstName: 'jane',
+							},
+						},
+						{
+							__typename: 'UserEdge',
+							node: {
+								__typename: 'User',
+								id: '3',
+								firstName: 'mary',
+							},
+						},
+					],
+				},
+			},
+		},
+		partial: false,
+		stale: false,
+	})
 })
 
 test('inserting data with an update overwrites a record inserted with list.append', function () {