diff --git a/lib/atol/errors.rb b/lib/atol/errors.rb
index fcfaa26..d93df40 100644
--- a/lib/atol/errors.rb
+++ b/lib/atol/errors.rb
@@ -3,4 +3,5 @@ class MissingConfigError < StandardError; end
   class AuthBadRequestError < StandardError; end
   class AuthUserOrPasswordError < StandardError; end
   class ConfigExpectedError < StandardError; end
+  class UnknownOperationError < StandardError; end
 end
diff --git a/lib/atol/request/post_document.rb b/lib/atol/request/post_document.rb
new file mode 100644
index 0000000..5538f6f
--- /dev/null
+++ b/lib/atol/request/post_document.rb
@@ -0,0 +1,46 @@
+require 'atol'
+require 'atol/errors'
+require 'net/http'
+
+module Atol
+  module Request
+    class PostDocument
+      OPERATIONS = %i[sell sell_refund sell_correction buy buy_refund buy_correction].freeze
+      HEADERS = { 'Content-Type' => 'application/json' }.freeze
+
+      def initialize(operation:, token:, body:, config: nil)
+        @config = config || Atol.config
+        raise(Atol::ConfigExpectedError) unless @config.is_a?(Atol::Config)
+        raise(Atol::MissingConfigError, 'group_code missing') if @config.group_code.empty?
+
+        unless OPERATIONS.include?(operation.to_sym)
+          raise(Atol::UnknownOperationError, operation.to_s)
+        end
+
+        @url = "#{Atol::URL}"
+        @url << '/'
+        @url <<  @config.group_code
+        @url << '/'
+        @url <<  operation.to_s
+        @url << '?token_id='
+        @url << token
+
+        @body = body
+      end
+
+      def call
+        uri = URI(url)
+        req = Net::HTTP::Post.new(uri, HEADERS)
+        req.body = body
+
+        Net::HTTP.start(uri.hostname, uri.port) do |http|
+          http.request(req)
+        end
+      end
+
+      private
+
+      attr_reader :url, :body
+    end
+  end
+end
diff --git a/spec/atol/errors_spec.rb b/spec/atol/errors_spec.rb
index fb5c809..29e4043 100644
--- a/spec/atol/errors_spec.rb
+++ b/spec/atol/errors_spec.rb
@@ -2,7 +2,16 @@
 
 describe Atol::MissingConfigError do
   it { expect(Atol::MissingConfigError).to be_a Class }
+end
+describe Atol::ConfigExpectedError do
   it { expect(Atol::ConfigExpectedError).to be_a Class }
+end
+describe Atol::AuthBadRequestError do
   it { expect(Atol::AuthBadRequestError).to be_a Class }
+end
+describe Atol::AuthUserOrPasswordError do
   it { expect(Atol::AuthUserOrPasswordError).to be_a Class }
 end
+describe Atol::UnknownOperationError do
+  it { expect(Atol::UnknownOperationError).to be_a Class }
+end
diff --git a/spec/atol/request/post_document_spec.rb b/spec/atol/request/post_document_spec.rb
new file mode 100644
index 0000000..3f22016
--- /dev/null
+++ b/spec/atol/request/post_document_spec.rb
@@ -0,0 +1,65 @@
+require 'net/http'
+require './lib/atol/request/post_document'
+
+describe Atol::Request::PostDocument do
+  it { expect(described_class).to be_a Class }
+
+  let(:config) { Atol::Config.new(overrides: { group_code: 'group_code_example' }) }
+  let(:token) { 'token_example' }
+  let(:body) { '{"json": "example"}' }
+  let(:base_params) { Hash[token: token, body: body, config: config] }
+
+  describe '#new' do
+    context 'when given existing operation' do
+      it 'sell' do
+        params = base_params.merge(operation: 'sell')
+        expect { described_class.new(params) }.not_to raise_error
+      end
+
+      it 'sell_refund' do
+        params = base_params.merge(operation: 'sell_refund')
+        expect { described_class.new(params) }.not_to raise_error
+      end
+
+      it 'sell_correction' do
+        params = base_params.merge(operation: 'sell_correction')
+        expect { described_class.new(params) }.not_to raise_error
+      end
+
+      it 'buy' do
+        params = base_params.merge(operation: 'buy')
+        expect { described_class.new(params) }.not_to raise_error
+      end
+
+      it 'buy_refund' do
+        params = base_params.merge(operation: 'buy_refund')
+        expect { described_class.new(params) }.not_to raise_error
+      end
+
+      it 'buy_correction' do
+        params = base_params.merge(operation: 'buy_correction')
+        expect { described_class.new(params) }.not_to raise_error
+      end
+    end
+
+    context 'when given not existing operation' do
+      let(:not_existing_operation) { :kill_all_humans }
+      let(:params) { base_params.merge(operation: not_existing_operation) }
+      it { expect { described_class.new(params) }.to raise_error(Atol::UnknownOperationError) }
+    end
+  end
+
+  describe '#call' do
+    before do
+      stub_request(:post, 'http://online.atol.ru:443/possystem/v3/group_code_example/sell?token_id=token_example')
+        .to_return(status: 200, body: '', headers: {})
+    end
+
+    it 'call return result of http request' do
+      params = base_params.merge(operation: :sell)
+      request = described_class.new(params)
+      response = request.call
+      expect(response.code).to eql '200'
+    end
+  end
+end