curl --request DELETE \
  --url https://sandbox.api.portal.io/public/proposals/{ProposalId}/items \
  --header 'Accept: <accept>' \
  --header 'X-MSS-API-APPID: <api-key>' \
  --header 'X-MSS-API-USERKEY: <api-key>' \
  --header 'X-MSS-CUSTOM-DATE: <api-key>' \
  --header 'X-MSS-SIGNATURE: <api-key>'

import requests

url = "https://sandbox.api.portal.io/public/proposals/{ProposalId}/items"

headers = {
    "Accept": "<accept>",
    "X-MSS-API-APPID": "<api-key>",
    "X-MSS-API-USERKEY": "<api-key>",
    "X-MSS-CUSTOM-DATE": "<api-key>",
    "X-MSS-SIGNATURE": "<api-key>"
}

response = requests.delete(url, headers=headers)

print(response.text)

const options = {
  method: 'DELETE',
  headers: {
    Accept: '<accept>',
    'X-MSS-API-APPID': '<api-key>',
    'X-MSS-API-USERKEY': '<api-key>',
    'X-MSS-CUSTOM-DATE': '<api-key>',
    'X-MSS-SIGNATURE': '<api-key>'
  }
};

fetch('https://sandbox.api.portal.io/public/proposals/{ProposalId}/items', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "responseStatus": {
    "errorCode": "BadRequest",
    "message": "Invalid item ids."
  }
}

{
  "responseStatus": {
    "errorCode": "Unauthorized",
    "message": "Not Authorized. Ensure a valid session cookie or HMAC authentication headers are provided."
  }
}

{
  "responseStatus": {
    "errorCode": "PaymentRequired",
    "message": "The dealer's subscription is inactive or expired. An active subscription is required to use this endpoint."
  }
}

{
  "responseStatus": {
    "errorCode": "Forbidden",
    "message": "You do not have permission for this action."
  }
}

{
  "responseStatus": {
    "errorCode": "NotFound",
    "message": "Proposal or item not found."
  }
}

{
  "responseStatus": {
    "errorCode": "Conflict",
    "message": "Proposal state prevents editing"
  }
}