Form Recognizer 2021-09-30-preview

Form Recognizer extracts information from forms and images into structured data. It includes the following options:

  • Layout - Extracts text and table structure from documents using optical character recognition (OCR).
  • Document - Extract text, selection marks, tables, entities, and general key-value pairs from documents.
  • Business Card - Detects and extracts data from business cards using optical character recognition (OCR) and our business card model, enabling you to easily extract structured data from business cards such as contact names, company names, phone numbers, emails, and more.
  • ID Document - Detects and extracts data from identification documents using optical character recognition (OCR) and our ID document model, enabling you to easily extract structured data from ID documents such as first name, last name, date of birth, document number, and more.
  • Invoices - Detects and extracts data from invoices using optical character recognition (OCR) and our invoice understanding deep learning models, enabling you to easily extract structured data from invoices such as customer, vendor, invoice ID, invoice due date, total, invoice amount due, tax amount, ship to, bill to, line items and more.
  • Receipt - Detects and extracts data from receipts using optical character recognition (OCR) and our receipt model, enabling you to easily extract structured data from receipts such as merchant name, merchant phone number, transaction date, transaction total, and more.
  • Custom - Extracts information from forms (PDFs and images) into structured data based on a model created from a set of representative training forms. Form Recognizer learns the structure of your forms to intelligently extract text and data. It ingests text from forms, applies machine learning technology to identify keys, tables, and fields, and then outputs structured data that includes the relationships within the original file.

Request URL

Request headers

string
Media type of the body sent to the API.
string
Subscription key which provides access to this API. Found in your Cognitive Services accounts.

Request body

{
  "modelId": "string",
  "description": "string",
  "componentModels": [
    {
      "modelId": "string"
    }
  ]
}
{
  "description": "Request body to create a composed model from component models.",
  "type": "object",
  "required": [
    "modelId",
    "componentModels"
  ],
  "properties": {
    "modelId": {
      "description": "Unique model name.",
      "type": "string",
      "format": "[a-zA-Z0-9][a-zA-Z0-9._~-]{1,63}"
    },
    "description": {
      "description": "Model description.",
      "type": "string",
      "maxLength": 4096
    },
    "componentModels": {
      "description": "List of component models to compose.",
      "type": "array",
      "uniqueItems": true,
      "items": {
        "description": "A component of a composed model.",
        "type": "object",
        "required": [
          "modelId"
        ],
        "properties": {
          "modelId": {
            "description": "Unique model name.",
            "type": "string",
            "format": "[a-zA-Z0-9][a-zA-Z0-9._~-]{1,63}"
          }
        }
      }
    }
  },
  "example": "{\r\n  \"modelId\": \"string\",\r\n  \"description\": \"string\",\r\n  \"componentModels\": [\r\n    {\r\n      \"modelId\": \"string\"\r\n    },\r\n    {\r\n      \"modelId\": \"string\"\r\n    }\r\n  ]\r\n}"
}

Response 202

Request is queued successfully.

Response 500

The top-level error.code property can be one of the following:

Error Code Message
InternalServerError An unexpected error occurred.
When possible, additional details are specified in the innererror property:
Top Error Code Inner Error Code Message
InternalServerError Unknow Unknow error.

{
  "error": {
    "code": "InternalServerError",
    "message": "An unexpected error occurred.",
    "innererror": {
      "code": "Unknown",
      "message": "Unknown error."
    }
  }
}

Response 400

The top-level error.code property can be one of the following:

Error Code Message
InvalidRequest Invalid request.
InvalidArgument Invalid argument.
When possible, additional details are specified in the innererror property:
Top Error Code Inner Error Code Message
InvalidArgument GeneralInvalidParameter Include at least {minModels} unique models.
InvalidArgument GeneralInvalidParameter include {maxModels} models or fewer.
InvalidRequest DocumentModelLimit Account cannot create more than {maximumModels} models
InvalidRequest DocumentModelLimit Account cannot create more than {0} models.
InvalidRequest ModelNotReady Model is not ready for the requested operation. Wait for training to complete or check for operation errors.

{
  "error": {
    "code": "InvalidRequest",
    "message": "Invalid request.",
    "innererror": {
      "code": "ModelNotReady",
      "message": "Model is not ready for the requested operation. Wait for training to complete or check for operation errors."
    }
  }
}

Response 403

The top-level error.code property can be one of the following:

Error Code Message
Forbidden Access forbidden due to policy or other configuration.
When possible, additional details are specified in the innererror property:
Top Error Code Inner Error Code Message
Forbidden AuthorizationFailed Authorization failed: {details}
Forbidden InvalidDataProtectionKey Data protection key is invalid: {details}

{
  "error": {
    "code": "Forbidden",
    "message": "Access forbidden due to policy or other configuration.",
    "innererror": {
      "code": "InvalidDataProtectionKey",
      "message": "Data protection key is invalid: {details}"
    }
  }
}

Response 404

The top-level error.code property can be one of the following:

Error Code Message
NotFound Resource not found.
When possible, additional details are specified in the innererror property:
Top Error Code Inner Error Code Message
NotFound ModelNotFound Requested model {modelId} does not exist.

{
  "error": {
    "code": "NotFound",
    "message": "Resource not found.",
    "innererror": {
      "code": "ModelNotFound",
      "message": "Requested model {modelId} does not exist."
    }
  }
}

Response 409

The top-level error.code property can be one of the following:

Error Code Message
Conflict The request could not be completed due to a conflict.
When possible, additional details are specified in the innererror property:
Top Error Code Inner Error Code Message
Conflict ModelExists A model with the provided name already exists.

{
  "error": {
    "code": "Conflict",
    "message": "The request could not be completed due to a conflict with the current state of the target resource.",
    "innererror": {
      "code": "ModelExists",
      "message": "A model with the provided name already exists."
    }
  }
}

Code samples

@ECHO OFF

curl -v -X POST "https://westus.api.cognitive.microsoft.com/formrecognizer/documentModels:compose?api-version=2021-09-30-preview"
-H "Content-Type: application/json"
-H "Ocp-Apim-Subscription-Key: {subscription key}"

--data-ascii "{body}" 
using System;
using System.Net.Http.Headers;
using System.Text;
using System.Net.Http;
using System.Web;

namespace CSHttpClientSample
{
    static class Program
    {
        static void Main()
        {
            MakeRequest();
            Console.WriteLine("Hit ENTER to exit...");
            Console.ReadLine();
        }
        
        static async void MakeRequest()
        {
            var client = new HttpClient();
            var queryString = HttpUtility.ParseQueryString(string.Empty);

            // Request headers
            client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", "{subscription key}");

            var uri = "https://westus.api.cognitive.microsoft.com/formrecognizer/documentModels:compose?api-version=2021-09-30-preview&" + queryString;

            HttpResponseMessage response;

            // Request body
            byte[] byteData = Encoding.UTF8.GetBytes("{body}");

            using (var content = new ByteArrayContent(byteData))
            {
               content.Headers.ContentType = new MediaTypeHeaderValue("< your content type, i.e. application/json >");
               response = await client.PostAsync(uri, content);
            }

        }
    }
}	
// // This sample uses the Apache HTTP client from HTTP Components (http://hc.apache.org/httpcomponents-client-ga/)
import java.net.URI;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

public class JavaSample 
{
    public static void main(String[] args) 
    {
        HttpClient httpclient = HttpClients.createDefault();

        try
        {
            URIBuilder builder = new URIBuilder("https://westus.api.cognitive.microsoft.com/formrecognizer/documentModels:compose?api-version=2021-09-30-preview");


            URI uri = builder.build();
            HttpPost request = new HttpPost(uri);
            request.setHeader("Content-Type", "application/json");
            request.setHeader("Ocp-Apim-Subscription-Key", "{subscription key}");


            // Request body
            StringEntity reqEntity = new StringEntity("{body}");
            request.setEntity(reqEntity);

            HttpResponse response = httpclient.execute(request);
            HttpEntity entity = response.getEntity();

            if (entity != null) 
            {
                System.out.println(EntityUtils.toString(entity));
            }
        }
        catch (Exception e)
        {
            System.out.println(e.getMessage());
        }
    }
}

<!DOCTYPE html>
<html>
<head>
    <title>JSSample</title>
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>
</head>
<body>

<script type="text/javascript">
    $(function() {
        var params = {
            // Request parameters
        };
      
        $.ajax({
            url: "https://westus.api.cognitive.microsoft.com/formrecognizer/documentModels:compose?api-version=2021-09-30-preview&" + $.param(params),
            beforeSend: function(xhrObj){
                // Request headers
                xhrObj.setRequestHeader("Content-Type","application/json");
                xhrObj.setRequestHeader("Ocp-Apim-Subscription-Key","{subscription key}");
            },
            type: "POST",
            // Request body
            data: "{body}",
        })
        .done(function(data) {
            alert("success");
        })
        .fail(function() {
            alert("error");
        });
    });
</script>
</body>
</html>
#import <Foundation/Foundation.h>

int main(int argc, const char * argv[])
{
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
    
    NSString* path = @"https://westus.api.cognitive.microsoft.com/formrecognizer/documentModels:compose?api-version=2021-09-30-preview";
    NSArray* array = @[
                         // Request parameters
                         @"entities=true",
                      ];
    
    NSString* string = [array componentsJoinedByString:@"&"];
    path = [path stringByAppendingFormat:@"?%@", string];

    NSLog(@"%@", path);

    NSMutableURLRequest* _request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:path]];
    [_request setHTTPMethod:@"POST"];
    // Request headers
    [_request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
    [_request setValue:@"{subscription key}" forHTTPHeaderField:@"Ocp-Apim-Subscription-Key"];
    // Request body
    [_request setHTTPBody:[@"{body}" dataUsingEncoding:NSUTF8StringEncoding]];
    
    NSURLResponse *response = nil;
    NSError *error = nil;
    NSData* _connectionData = [NSURLConnection sendSynchronousRequest:_request returningResponse:&response error:&error];

    if (nil != error)
    {
        NSLog(@"Error: %@", error);
    }
    else
    {
        NSError* error = nil;
        NSMutableDictionary* json = nil;
        NSString* dataString = [[NSString alloc] initWithData:_connectionData encoding:NSUTF8StringEncoding];
        NSLog(@"%@", dataString);
        
        if (nil != _connectionData)
        {
            json = [NSJSONSerialization JSONObjectWithData:_connectionData options:NSJSONReadingMutableContainers error:&error];
        }
        
        if (error || !json)
        {
            NSLog(@"Could not parse loaded json with error:%@", error);
        }
        
        NSLog(@"%@", json);
        _connectionData = nil;
    }
    
    [pool drain];

    return 0;
}
<?php
// This sample uses the Apache HTTP client from HTTP Components (http://hc.apache.org/httpcomponents-client-ga/)
require_once 'HTTP/Request2.php';

$request = new Http_Request2('https://westus.api.cognitive.microsoft.com/formrecognizer/documentModels:compose?api-version=2021-09-30-preview');
$url = $request->getUrl();

$headers = array(
    // Request headers
    'Content-Type' => 'application/json',
    'Ocp-Apim-Subscription-Key' => '{subscription key}',
);

$request->setHeader($headers);

$parameters = array(
    // Request parameters
);

$url->setQueryVariables($parameters);

$request->setMethod(HTTP_Request2::METHOD_POST);

// Request body
$request->setBody("{body}");

try
{
    $response = $request->send();
    echo $response->getBody();
}
catch (HttpException $ex)
{
    echo $ex;
}

?>
########### Python 2.7 #############
import httplib, urllib, base64

headers = {
    # Request headers
    'Content-Type': 'application/json',
    'Ocp-Apim-Subscription-Key': '{subscription key}',
}

params = urllib.urlencode({
})

try:
    conn = httplib.HTTPSConnection('westus.api.cognitive.microsoft.com')
    conn.request("POST", "/formrecognizer/documentModels:compose?api-version=2021-09-30-preview&%s" % params, "{body}", headers)
    response = conn.getresponse()
    data = response.read()
    print(data)
    conn.close()
except Exception as e:
    print("[Errno {0}] {1}".format(e.errno, e.strerror))

####################################

########### Python 3.2 #############
import http.client, urllib.request, urllib.parse, urllib.error, base64

headers = {
    # Request headers
    'Content-Type': 'application/json',
    'Ocp-Apim-Subscription-Key': '{subscription key}',
}

params = urllib.parse.urlencode({
})

try:
    conn = http.client.HTTPSConnection('westus.api.cognitive.microsoft.com')
    conn.request("POST", "/formrecognizer/documentModels:compose?api-version=2021-09-30-preview&%s" % params, "{body}", headers)
    response = conn.getresponse()
    data = response.read()
    print(data)
    conn.close()
except Exception as e:
    print("[Errno {0}] {1}".format(e.errno, e.strerror))

####################################
require 'net/http'

uri = URI('https://westus.api.cognitive.microsoft.com/formrecognizer/documentModels:compose?api-version=2021-09-30-preview')
uri.query = URI.encode_www_form({
})

request = Net::HTTP::Post.new(uri.request_uri)
# Request headers
request['Content-Type'] = 'application/json'
# Request headers
request['Ocp-Apim-Subscription-Key'] = '{subscription key}'
# Request body
request.body = "{body}"

response = Net::HTTP.start(uri.host, uri.port, :use_ssl => uri.scheme == 'https') do |http|
    http.request(request)
end

puts response.body