Found unmapped fields during JSON-LD normalization

I’m getting the error while I’m going to verify it from web browser (https://www.blockcerts.org/)

I have added the additional fields in the manner of below example:

additional_per_recipient_fields = {"fields": [{"path": "$.evidence","value": "*|EVIDENCE|*","csv_column": "evidence"}]}

In above json I have added multiple fields and yes if the title is more then one word then I used it as:

additional_per_recipient_fields = {"fields": [{"path": "$.evidence_title","value": "*|EVIDENCE_TITLE|*","csv_column": "evidence_title"}]}

Now can you please help me why I’m getting the error called:

Hi @dekts,

JSONLD normalization is a process where the document is parsed against a context definition.
It’s being thrown here: https://github.com/blockchain-certificates/cert-verifier-js/blob/master/src/inspectors/computeLocalHash.js#L88

Basically what this is telling you is that you are using fields that are not defined by the @context key of your certificate.
You could try and define the keys that you are adding in your document in the same fashion as what Learning Machine does:

"@context": [
    "https://w3id.org/openbadges/v2",
    "https://w3id.org/blockcerts/v2",
    {
      "metadataJson": {
        "@id": "https://schemas.learningmachine.com/2017/blockcerts/metadata",
        "@type": "https://schemas.learningmachine.com/2017/types/text/json"
      },
      "displayHtml": {
        "@id": "https://schemas.learningmachine.com/2017/blockcerts/displayHtml",
        "@type": "https://schemas.learningmachine.com/2017/types/text/html"
      },
      "nonce": {
        "@id": "https://schemas.learningmachine.com/2017/blockcerts/nonce",
        "@type": "https://schema.org/Text"
      },
      "universalIdentifier": {
        "@id": "https://schemas.learningmachine.com/2017/blockcerts/identifier",
        "@type": "https://schema.org/Text"
      }
    }
  
]

I believe this should fix the issue for you

Yes correct @lemoustachiste
I have defined the parameters in the additional_global_fields

Here is the example how I have added the parameteres which is added in the additional_per_recipient_fields

  "fields": [
    {
      "path": "$.@context",
      "value": [
        "https://w3id.org/openbadges/v2",
        "https://w3id.org/blockcerts/v2",
        {
          "displayHtml": {
            "@id": "schema:description"
          },
          "xyz_name": {
            "@id": "schema:description"
          },
          "abc_logo": {
            "@id": "schema:description"
          }
        }
      ]
    }
  ]
}

Many thanks @lemoustachiste

Cheers!