CAPM - Uncaught TypeError: target.keys is not iterable

[GeovaneAlborghetti]

I'm studying CAP and I'm getting an error when calling the POST Method.

[cds] - ❗️Uncaught TypeError: target.keys is not iterable in calculateLocationHeader (/home/user/projects/first-project/node_modules/@sap/cds/libx/odata/utils/index.js:284:35) in /home/user/projects/first-project/node_modules/@sap/cds/libx/odata/middleware/create.js:76:31 in process.processTicksAndRejections (node:internal/process/task_queues:95:5)

My Entity

entity Customers {

    name    : String(100);

    age     : Integer;

}

Definy my service

service Main {

    entity Customers as projection on db.Customers;

}

Call de POST method

@server = http://localhost:4004

@auth = Authorization: Basic alice:

### Customers

# @name Customers_GET

GET {{server}}/odata/v4/main/Customers

{{auth}}

### Customers

# @name Customers_POST

POST {{server}}/odata/v4/main/Customers

Content-Type: application/json

{{auth}}

{

  "name": "name-4332508",

  "age": 39

}

Error

Has anyone ever caught this error?

[Dinu · Accepted solution]

add a key to your entity. The easiest would be to use the aspect cuid. 

using {cuid} from '@sap/cds/common';

entity Customers: cuid {

    name    : String(100);

    age     : Integer;

}

[GeovaneAlborghetti · Accepted solution]

Hi Dinu,

It worked, thanks for help me.