# Introduction
Please first review this PR initial base
https://github.com/twentyhq/twenty/pull/15358
In a nutshell refactored the frontend fetchers to display v2 errors
format smoothly
Please note that the v2 now finished the whole validation and does fail
fast anymore ( summary is hardcoded for the moment )
```json
[
{
"extensions": {
"code": "BAD_USER_INPUT",
"errors": {
"cronTrigger": [],
"databaseEventTrigger": [],
"fieldMetadata": [
{
"errors": [
{
"code": "INVALID_FIELD_INPUT",
"message": "Default value should be as quoted string",
"value": "",
},
{
"code": "INVALID_FIELD_INPUT",
"message": "Default value "" must be one of the option values",
"value": "",
},
],
"flatEntityMinimalInformation": {
"id": Any<String>,
"name": "testField",
"objectMetadataId": Any<String>,
},
"status": "fail",
"type": "create_field",
},
],
"index": [],
"objectMetadata": [],
"routeTrigger": [],
"serverlessFunction": [],
"view": [],
"viewField": [],
"viewFilter": [],
"viewGroup": [],
},
"message": "Validation failed for 0 object(s) and 0 field(s)",
"summary": {
"invalidCronTrigger": 0,
"invalidDatabaseEventTrigger": 0,
"invalidFieldMetadata": 0,
"invalidIndex": 0,
"invalidObjectMetadata": 0,
"invalidRouteTrigger": 0,
"invalidServerlessFunction": 0,
"invalidView": 0,
"invalidViewField": 0,
"invalidViewFilter": 0,
"invalidViewGroup": 0,
"totalErrors": 0,
},
"userFriendlyMessage": "Validation failed for 0 object(s) and 0 field(s)",
},
"message": "Multiple validation errors occurred while creating fields",
"name": "GraphQLError",
},
]
```
## What's done
- `usePersistView` tool ( CRUD )
- renamed `usePersistViewX` tools accordingly ( no more records or core
)
- Now catching a lot of before unhandled exceptions
- refactored each services to handle their own exception handlers and
return either the response or the error within a discriminated union
record
## Result
### Primary entity error
When performing an metadata operation on a given metadata, if validation
errors occurs we will display each of them in a toast
Here while creating an object metadata.
<img width="700" height="327" alt="image"
src="https://github.com/user-attachments/assets/0c33d13c-c66c-4749-af36-b253abd3449b"
/>
### Related entity error
Still while creating an object
<img width="700" height="327" alt="image"
src="https://github.com/user-attachments/assets/52607788-c4e9-470c-ac8c-23437345ee5c"
/>
### Translated
<img width="700" height="327" alt="image"
src="https://github.com/user-attachments/assets/a7198c20-ae82-47a6-910c-761de9594672"
/>
## Conclusion
This PR is an extract of https://github.com/twentyhq/twenty/pull/15331
close https://github.com/twentyhq/core-team-issues/issues/1776
## Notes
- Not refactor around triggers services as they're not consumed directly
by any frontend services
Paul Rastoin