General

<step id="send_asset" uitemplate="WAIT" persist="false" screen_lock_enabled="false" debug_mode="false">
    <actions>
        <action id="upload_media" type="trigger_upload_asset">
            <param name="asset_uri">#{media_file}</param>
            <param name="delete_after_upload" type="bool">true</param>
            <param name="upload_immediately" type="bool">true</param>
            <param name="upload_immediately_delete_on_failure" type="bool">true</param>
        </action>

        <send_commit_message id="send_asset_info" type="PHOTO" connection_timeout="200">
            <properties>
                <param name="asset_uri" type="string">#{event:payload.asset_uri}</param>
                <param name="asset_name" type="string">#{event:payload.asset_name}</param>
                <param name="asset_version" type="string">#{event:payload.asset_version}</param>
            </properties>
        </send_commit_message>

        <ui_notification id="show_nok" type="WARN">
            <duration>SHORT</duration>
            <message>Picture NOT OK</message>
        </ui_notification>

        <ui_notification id="show_upload_error" type="ERROR">
            <duration>SHORT</duration>
            <message>Media upload failed</message>
        </ui_notification>

        <ui_notification id="show_commit_error" type="ERROR">
            <duration>SHORT</duration>
            <message>Commit failed</message>
        </ui_notification>
    </actions>

    <states>
        <onresume>
            <rule id="auto_exec">
                <expression>1</expression>
                <actions>
                    <action ref="upload_media"/>
                </actions>
            </rule>
        </onresume>

        <onevent>
            <rule id="upload_ok">
                <expression>
                    <![CDATA[#{event(trigger_upload_asset):command} == 'OK']]>
                </expression>
                <actions>
                    <action ref="send_asset_info"/>
                </actions>
            </rule>
            <rule id="upload_error">
                <expression>
                    <![CDATA[#{event(trigger_upload_asset):command} == 'ERROR' || #{event(trigger_upload_asset):command} == 'NETWORK_ERROR' || #{event(trigger_upload_asset):command} == 'INTERNAL_ERROR']]>
                </expression>
                <actions>
                    <action ref="show_upload_error"/>
                    <action ref="finish"/>
                </actions>
            </rule>

            <rule id="commit_ok_ok">
                <expression>
                    <![CDATA[#{event(send_commit_message):command} == 'RESPONSE_OK' && #{event(send_commit_message):payload.response} == 'OK']]>
                </expression>
                <actions>
                    <action ref="finish_workflow"/>
                </actions>
            </rule>
            <rule id="commit_ok_nok">
                <expression>
                    <![CDATA[#{event(send_commit_message):command} == 'RESPONSE_OK' && #{event(send_commit_message):payload.response} != 'OK']]>
                </expression>
                <actions>
                    <action ref="show_nok"/>
                    <action ref="goto_take_picture"/>
                </actions>
            </rule>
            <rule id="commit_error_or_timeout">
                <expression>
                    <![CDATA[#{event(send_commit_message):command} == 'RESPONSE_ERROR' || #{event(send_commit_message):command} == 'RESPONSE_TIMEOUT']]>
                </expression>
                <actions>
                    <action ref="show_commit_error"/>
                    <action ref="goto_take_picture"/>
                </actions>
            </rule>
        </onevent>

    </states>
</step>

Handling with custom error status

<actions>
  <!-- dialog references variables set by the commit message response for error handling -->
  <ui_dialog id="sap_error" type="Error" title="Error">
    <message><![CDATA[#{sap_message}<br>Continue to '#{sap_material}/#{sap_position}'?]]></message>
    <buttons>
      <button>
        <text>ANDRRES_fw</text>
        <command>SAP_FIX</command>
        <focused>true</focused>
      </button>
      <button>
        <text>ANDRRES_bw</text>
        <command>DO_NOT_TRY_AGAIN</command>
      </button>
    </buttons>
  </ui_dialog>

<!-- more actions
  [...]
-->
</actions>

<!-- more WF code
 [...]
-->

<onevent>
  <!-- Technical success but check for SAP response -->
  <rule id="success">
    <expression><![CDATA[#{event:command} == 'RESPONSE_OK' && #{event:payload.status} == 0 ]]></expression>
    <actions>
      <ui_notification id="show_done" type="INFO">
        <duration>SHORT</duration>
        <message>#{cockpit_id} completed...</message>
      </ui_notification>
      <action ref="close_ds_task"/>
      <action ref="finish_workflow"/>
    </actions>
  </rule>

  <rule id="sap_error_in_success">
    <expression><![CDATA[#{event:command} == 'RESPONSE_OK' && #{event:payload.status} == 500 ]]></expression>
    <actions>  
      <!-- variables are automatically set when the event is handled and can be used in the action -->
      <action ref="sap_error"/>
    </actions>
  </rule>

  <rule id="unknown_error_in_success">
    <expression><![CDATA[#{event:command} == 'RESPONSE_OK' && #{event:payload.status} != 0 && #{event:payload.status} != 500 ]]></expression>
    <actions>
      <action ref="completion_error"/>
    </actions>
  </rule>

  <rule id="request_error">
    <expression><![CDATA[#{event:command} == 'RESPONSE_ERROR']]></expression>
    <actions>
      <action ref="completion_error"/>
    </actions>
  </rule>

  <rule id="request_timeout">
    <expression><![CDATA[#{event:command} == 'RESPONSE_TIMEOUT']]></expression>
    <actions>
      <action ref="completion_error"/>
    </actions>
  </rule>
</onevent>

<send_commit_message id="send_mqtt" type="FRONTLINE_MQTT" connection_timeout="200">
    <properties>
        <param name="mqtt" type="string"><![CDATA[?{
            var mqtt = {
                topic: "MY/TOPIC",
                content: "MY CONTENT"
            };
            var stringmqtt = JSON.stringify(mqtt);
            stringmqtt;}?]]>
        </param>
    </properties>
</send_commit_message>

@Override
public CommitMessageResponse handleCommitMessage(CommitMessage aCommit) {
    if("COMPLETE_INSPECTION".equals(aCommit.getType())) {
        String evaluation = aCommit.getIdentifier();
        // HANDLE EVENT
        // [CODE]
        if(isSuccess) {
            log.info("Completion success!");
            return new CommitMessageResponse(aCommit, 0, "Success!");
        }
        // HANDLE ERROR
        CommitMessageResponse cmr = new CommitMessageResponse(aCommit, 500, "SAP Error!");
        cmr.addProperties("sap_message", cr.getMessage()); // 'cr' is an object specific to the custom code
        cmr.addProperties("sap_material", cr.getMaterial());
        cmr.addProperties("sap_position", cr.getPosition());
        return cmr;
    }
    // OTHER MESSAGES

<add_attachment id="add_attachment">
    <param name="type" type="string">documentation-comment</param>
    <param name="content" type="string">#{current_comment}</param>
</add_attachment>

<add_attachment id="document_barcode">
    <param name="type" type="string">barcode-content</param>
    <param name="content" type="string">#{code}</param>
    <param name="override" type="bool">false</param>
</add_attachment>

<get_attachment_content id="get_attachment_content">
    <param name="type" type="string">documentation-comment</param>
    <param name="write_to" type="string">current_comment</param>
</get_attachment_content>

<get_attachment_content id="get_attachment_content">
    <param name="type" type="string">documentation-comment</param>
    <param name="write_to" type="string">current_comment</param>
    <param name="write_if_empty" type="bool">true</param>
</get_attachment_content>

<module_state id="resume_speech" module_name="de.ubimax.android.speechrecognition.SpeechRecognitionModule" change_state_to="resume"/>
<module_state id="pause_speech" module_name="de.ubimax.android.speechrecognition.SpeechRecognitionModule" change_state_to="pause"/>

<logoff id="myaction"/>