FlatFile that has no record giving error in BizTalk

Question

Hi,
I have a flatfile that is partly delimited and partly positional. The Schema has a Root Node that is in delimited structure.
1st Child Record: Header (Delimited)
It has a Child Element --> Date
2nd Child Order: Main (Positional)
It has 2 child elements --> Old Order number and New Order number. Both of them 7 character long each.
3rd Child Order: Footer (Delimited)
It has a Child element --> Record Count
Sample file that has records are
20141212
A123456B123456
C123456D123456
002
Now if the files that has records arrive, BizTalk is processing perfectly. But when a file that has no records come, it is giving out an error.
Sample file that has no record
20141214
000
Error: "There was a failure executing the receive pipeline. Source: FlatFile Disassembler. Reason: Unexpected end of stream while looking for \r\n. The line number where the error occurred is 3, column where the error occurred is 0.
Note: The Main Child Record is set 0 to unbounded.
Can anyone give me an idea why this is happening?
Thanks,
Rithu

Answer 1

The schema is as follows:
<?xml version="1.0" encoding="utf-16"?>
<xs:schema xmlns="http://BizTalkUpdateID.IDUpdate" xmlns:b="http://schemas.microsoft.com/BizTalk/2003" targetNamespace="http://BizTalkUpdateID.IDUpdate" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:annotation>
    <xs:appinfo>
      <b:schemaInfo standard="Flat File" root_reference="UpdateID" default_pad_char=" " pad_char_type="char" count_positions_by_byte="false" parser_optimization="speed" lookahead_depth="3"
suppress_empty_nodes="false" generate_empty_nodes="true" allow_early_termination="false" early_terminate_optional_fields="false" allow_message_breakup_of_infix_root="false" compile_parse_tables="false"
/>
      <schemaEditorExtension:schemaInfo namespaceAlias="b" extensionClass="Microsoft.BizTalk.FlatFileExtension.FlatFileExtension" standardName="Flat File" xmlns:schemaEditorExtension="http://schemas.microsoft.com/BizTalk/2003/SchemaEditorExtensions"
/>
    </xs:appinfo>
  </xs:annotation>
  <xs:element name="UpdateID">
    <xs:annotation>
      <xs:appinfo>
        <b:recordInfo structure="delimited" preserve_delimiter_for_empty_data="true" suppress_trailing_delimiters="false" sequence_number="1" child_delimiter_type="hex" child_order="postfix"
child_delimiter="0x0D 0x0A" />
      </xs:appinfo>
    </xs:annotation>
    <xs:complexType>
      <xs:sequence>
        <xs:annotation>
          <xs:appinfo>
            <b:groupInfo sequence_number="0" />
          </xs:appinfo>
        </xs:annotation>
        <xs:element name="Header">
          <xs:annotation>
            <xs:appinfo>
              <b:recordInfo sequence_number="1" structure="delimited" preserve_delimiter_for_empty_data="true" suppress_trailing_delimiters="false" child_delimiter_type="hex"
child_order="infix" child_delimiter="0x0D 0x0A" />
            </xs:appinfo>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:annotation>
                <xs:appinfo>
                  <b:groupInfo sequence_number="0" />
                </xs:appinfo>
              </xs:annotation>
              <xs:element name="Date" type="xs:string">
                <xs:annotation>
                  <xs:appinfo>
                    <b:fieldInfo sequence_number="1" justification="left" />
                  </xs:appinfo>
                </xs:annotation>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <xs:element minOccurs="0" maxOccurs="unbounded" name="UpdateLineItem">
          <xs:annotation>
            <xs:appinfo>
              <b:recordInfo sequence_number="2" structure="positional" preserve_delimiter_for_empty_data="true" suppress_trailing_delimiters="false" />
            </xs:appinfo>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:annotation>
                <xs:appinfo>
                  <b:groupInfo sequence_number="0" />
                </xs:appinfo>
              </xs:annotation>
              <xs:element name="OldID" type="xs:string">
                <xs:annotation>
                  <xs:appinfo>
                    <b:fieldInfo sequence_number="1" justification="left" pos_offset="0" pos_length="7" />
                  </xs:appinfo>
                </xs:annotation>
              </xs:element>
              <xs:element name="NewID" type="xs:string">
                <xs:annotation>
                  <xs:appinfo>
                    <b:fieldInfo sequence_number="2" justification="left" pos_length="7" />
                  </xs:appinfo>
                </xs:annotation>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <xs:element name="Footer">
          <xs:annotation>
            <xs:appinfo>
              <b:recordInfo sequence_number="3" structure="delimited" preserve_delimiter_for_empty_data="true" suppress_trailing_delimiters="false" child_delimiter_type="hex"
child_order="infix" child_delimiter="0x0D 0x0A" tag_name="FOOTER" />
            </xs:appinfo>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:annotation>
                <xs:appinfo>
                  <b:groupInfo sequence_number="0" />
                </xs:appinfo>
              </xs:annotation>
              <xs:element name="RecordCount" type="xs:string">
                <xs:annotation>
                  <xs:appinfo>
                    <b:fieldInfo sequence_number="1" justification="left" />
                  </xs:appinfo>
                </xs:annotation>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
</xs:schema>
The input instance file that is failing is:
20141025
FOOTER000
Note: A blank line at the end of the file is that accounting for the CR LF. This shouldnt be the problem because if the file has record it works fine.
As you told I made the optional UpdateLineItem record as a sequence group. It still did not work. Let me know if you can provide some help on this. Thanks.
Rithu