Invalid `documentId` param: UID must contain at most 36 chars. Valid chars are a-z, A-Z, 0-9, and un

in Flutter App i have a class, let's call it the car class.

i create a new Car:

Car(
id: ID.unique(),
created: true,
)

and on other place there is a function which is called:
if car.created == true:

...databases.createDocument(
databaseId: ENV.APPWRITE_DB,
collectionId: ENV.CAR_COLLECTION,
documentId: car.id,
data: car.toAppwrite(),
);

my problem is: i get this error in return:

AppwriteException: general_argument_invalid, Invalid documentId param: UID must contain at most 36 chars. Valid chars are a-z, A-Z, 0-9, and underscore. Can't start with a leading underscore (400)<…>

would be great for any solutions and explanations of the reason.

What does your car ID look like ?

Would help if you print the value of car.id before you make the call to createDocument()

i get: "unique()" in return

are you able to open your app on the browser and inspect the network request?

hm, i can try to check it with the dev tools

yea that would be helpful 👍

request uri: https://appwrite.domain.com/v1/databases/alpha_db/collections/car/documents/unique()
method: PATCH
status: 400

request: {"data":{"title":"test2"}}

response: {"message":"Invalid documentId param: UID must contain at most 36 chars. Valid chars are a-z, A-Z, 0-9, and underscore. Can't start with a leading underscore","code":400,"type":"general_argument_invalid","version":"1.4.13"}

You;re hitting the updateDocument endpoint as indicated by the PATCH method

so you're trying to update a document with id unique() which does not exist

lol you right

Hope that solves the problem ?

yes, thank you very much

No worries 👌