# Filament v4 + Binary UUID v7 - Edit Route Issue## Context
Form builder4️⃣v4
I'm working with Laravel 12 and Filament 4.x, using binary UUID v7 (16 bytes) as primary keys in
- Generated URL:
- Error: 404 Not Found
- Expected UUID:
The UUID in the URL appears to be an incorrect hexadecimal encoding of the UUID string.
- Affected tables:
- Custom
- Overridden methods:
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usersinvoicesMain Problem
Filament edit routes are generating URLs with malformed UUIDs and returning 404. For example:- Generated URL:
https://binaryuuid.test/admin/invoices/30313961-6637-6534-2d63-3933652d3733/edit- Error: 404 Not Found
- Expected UUID:
019af7e4-c93e-73f9-a5ab-bc6e56c25535The UUID in the URL appears to be an incorrect hexadecimal encoding of the UUID string.
Current Architecture
Database
-idbinary(16)- Affected tables:
usersinvoicescustomer_identitiesinvoice_itemsModels
-HasBinaryUuid- Custom
BinaryUuidCastsAttributes- Overridden methods:
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getKey()-
getRouteKey()-
getAuthIdentifier()-
resolveRouteBinding()-
getAttributes()Filament Resources
-EditInvoicemount()-
mutateFormDataBeforeFill()
