DSpace 8 Creation of a submission workspaceitem -400 error

[Alfredo Alexander]

Hi everyone.

I'm having an issue while creating a workspaceitem.

I'm following the api documentation and I'm getting a status 400 errror.

This is my code:

const submissionUrl = `https://api-new-bcnroc.metricsalad.com/api/submission/workspaceitems?owningCollection=${coleccio.uuid}`;

  const submissionResponse = await fetch(submissionUrl, {

    method: "POST",

    headers: {

      Authorization: bearerToken ?? "",

      Cookie: xsrfCookie,

      "Content-Type": "application/json",

      "X-XSRF-TOKEN": csrfToken ?? "",

    },

  });

  //console.log(submissionResponse);

  const data = await submissionResponse.json();

  const id = data.id;

  const body1 = JSON.stringify({

    id: id,

    type: "workspaceitem",

    sections: {

      traditionalpageone: {

        "dc.title": titol,

        "dc.date.issued": dataPub,

"dc.type": tipusDocument,

      },

    },

  });

  const formUrl = `https://api-new-bcnroc.metricsalad.com/api/submission/workspaceitems/${id}`;

  const formResponse = await fetch(formUrl, {

    method: "PATCH",

    headers: {

      Authorization: bearerToken ?? "",

      Cookie: xsrfCookie,

      "Content-Type": "application/json",

      "X-XSRF-TOKEN": csrfToken ?? "",

    },

    body: body1,

  });

  console.log(formResponse);

The data I upload has the required format.

Can you please, give me some guidance?

Thanks for all your help