Unable to read the stream produced by the pipeline when generate CSV without header with send pipeline BizTalk - export-to-csv

Question

I have to generate a CSV file without the header line.
So I created the following xsd :
<?xml version="1.0" encoding="utf-16" ?>
<xs:schema xmlns="http://Person.Schemas.Person_Export" xmlns:b="http://schemas.microsoft.com/BizTalk/2003" targetNamespace="http://Person.Schemas.Person_Export" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:annotation>
<xs:appinfo>
<b:schemaInfo standard="Flat File" root_reference="Person_Export" 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="Person_Export">
<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_delimiter="0x0D 0x0A" child_order="postfix"/>
</xs:appinfo>
</xs:annotation>
<xs:complexType>
<xs:sequence>
<xs:annotation>
<xs:appinfo>
<b:groupInfo sequence_number="0"/>
</xs:appinfo>
</xs:annotation>
<xs:element name="Person">
<xs:annotation>
<xs:appinfo>
<b:recordInfo structure="delimited" preserve_delimiter_for_empty_data="true" suppress_trailing_delimiters="false" sequence_number="1" child_delimiter_type="char" child_delimiter="," child_order="infix"/>
</xs:appinfo>
</xs:annotation>
<xs:complexType>
<xs:sequence>
<xs:annotation>
<xs:appinfo>
<b:groupInfo sequence_number="0"/>
</xs:appinfo>
</xs:annotation>
<xs:element minOccurs="1" name="over_start_date" type="xs:date">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo justification="left" datetime_format="dd-MM-yyyy" sequence_number="1"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs="1" name="over_end_date" type="xs:date">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number="2" justification="left" datetime_format="dd-MM-yyyy"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs="1" name="emp_name" type="xs:string">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number="3" justification="left"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs="1" name="emp_lastname" type="xs:string">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number="4" justification="left"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs="1" name="emp_firstname" type="xs:string">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number="5" justification="left"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs="1" name="EMP_UDF_DATA1" type="xs:string">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number="6" justification="left"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs="1" name="EMP_UDF_DATA2" type="xs:string">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number="7" justification="left"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs="1" name="EMP_UDF_DATA3" type="xs:string">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number="8" justification="left"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs="1" name="emp_birth_date" type="xs:date">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number="9" justification="left" datetime_format="dd-MM-yyyy"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs="1" name="EMP_HIRE_DATE" type="xs:date">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number="10" justification="left" datetime_format="dd-MM-yyyy"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs="1" default="1" name="WBU_PASSWORD" type="xs:string">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number="11" justification="left"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs="1" name="WBU_EMAIL" type="xs:string">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number="12" justification="left"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs="1" name="WBU_NAME" type="xs:string">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number="13" justification="left"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs="1" default="NL OFFICERS" name="WBG_ID" type="xs:string">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number="14" justification="left"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs="1" default="Dutch" name="WBLL_ID" type="xs:string">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number="15" justification="left"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs="1" name="USER_STATUS" type="xs:string">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number="16" justification="left"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs="1" default="N" name="WBU_CAN_PROXY" type="xs:string">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number="17" justification="left"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs="1" default="999999" name="EMP_SIN" type="xs:string">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number="18" justification="left"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs="1" name="EMP_VAL20" type="xs:string">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number="19" justification="left"/>
</xs:appinfo>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
The file is generated correctly :
<ns0:Person_Export xmlns:ns0="http://Person.Schemas.Person_Export">
<Person>
<over_start_date>26-11-2022</over_start_date>
<over_end_date/>
<emp_name>000123</emp_name>
<emp_lastname>test</emp_lastname>
<emp_firstname>test</emp_firstname>
<EMP_UDF_DATA1/>
<EMP_UDF_DATA2>[phone]</EMP_UDF_DATA2>
<EMP_UDF_DATA3>012345678</EMP_UDF_DATA3>
<emp_birth_date>29-04-1976</emp_birth_date>
<EMP_HIRE_DATE>03-02-2000</EMP_HIRE_DATE>
<WBU_PASSWORD>1</WBU_PASSWORD>
<WBU_EMAIL>test#hotmail.com</WBU_EMAIL>
<WBU_NAME>000123</WBU_NAME>
<WBG_ID>NL OFFICERS</WBG_ID>
<WBLL_ID>Dutch</WBLL_ID>
<USER_STATUS/>
<WBU_CAN_PROXY>N</WBU_CAN_PROXY>
<EMP_SIN>999999</EMP_SIN>
<EMP_VAL20>M</EMP_VAL20>
</Person>
</ns0:Person_Export>
But the pipeline return this error :
Unable to read the stream produced by the pipeline.
Details: Value cannot be null.
Parameter name: format
The fields over_end_date, EMP_UDF_DATA1 and USER_STATUS must be blank in the output so in the mapping I setted the Value property to empty.
I tested this solution but doesn't resolved my issue.

Answer 1

Ok I managed to find a solution by changing the date type to string type.
The fact that some date in my output must be empty was the reason for this error.