Currently, I am able to create a datasource and an index through HTTP requests through Postman. Both my Azure AI Search and my CosmosDB for Mongo have public access disabled.

POST request for my datasource which works:

POST https://example-mongo.search.windows.net/datasources?api-version=2024-07-01
    Content-Type: application/json
    api-key: [my key for azure search]

{   
    "name" : "collection-datasource",  
    "description" : "Anything you want, or nothing at all",  
    "type" : "cosmosdb",
    "credentials" : { 
        "connectionString" : "AccountEndpoint=https://example-mongo.documents.azure.com:443/;AccountKey=abcd==;Database=DB;ApiKind=MongoDB" 
        },
    "container": {
        "name": "collection"
    }
}

POST request for indexer which does not work and gives me a 403 error:

POST https://example-mongo.search.windows.net/indexers?api-version=2024-07-01
    Content-Type: application/json
    api-key: [my key for azure search]

{
  "name": "collection-indexer",
  "description": null,
  "dataSourceName": "collection-datasource",
  "targetIndexName": "collection-index", #Created previously through postman as well
  "parameters": {
    "batchSize": null,
    "maxFailedItems": null,
    "maxFailedItemsPerBatch": null
  },
  "fieldMappings": [
    {
      "sourceFieldName": "productDescription",
      "targetFieldName": "productDescriptionCustom",
      "mappingFunction": null
    }
  ]
}

The 403 error:

Error with data source: Response status code does not indicate success: Forbidden (403);
Substatus: 0; ActivityId: 1ffa970a-5bb7-42fa-8ace-968fc329bae1;
Reason: (Request originated from IP --- through public internet.
This is blocked by your Cosmos DB account firewall settings. 
More info: https://aka.ms/cosmosdb-tsg-forbiddenrnActivityId: --,
Microsoft.Azure.Documents.Common/2.14.0, Windows/10.0.20348 cosmos-netstandard-sdk/3.30.20); 
Please adjust your data source definition in order to proceed

I’m unsure what “Please adjust your data source definition” means. Am I able to somehow add the connection string for my CosmosDB into my request to create an indexer?