c# - IRS ACA SOAP boundary error

Question

I am posting a GZip compressed SOAP request to IRS ACA webservice using httpClient. Below you will find the SOAP request. I get boundary error quoted below. Can anyone point to problems with my request?

Multipart stream ended before a terminating boundary was encountered

POST URL HTTP/1.1
SOAPAction: BulkRequestTransmitter
Accept-Encoding: gzip, deflate
Content-Type: multipart/related; type="application/xop + xml"; start="< http://tempuri.org/SOAP>"; start-info="text/xml"; boundary="------------030003010806000401010306"
MIME-Version: 1.0
Host: HOST
Content-Length: 17797
Expect: 100-continue
Connection: Keep-Alive

--------------030003010806000401010306
Content-Type: application/xop+xml; type="text/xml"; charset=utf-8
Content-ID: <http://tempuri.org/SOAP>
Content-Transfer-Encoding: 8bit

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
    <soap:Header soap:mustunderstand="1" xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
        <wsse:Security>
            <ds:Signature Id="SIG-9c4e3c69-8d46-4868-90ce-6f3a8e6585b2" xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
                <ds:SignedInfo>
                    <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#WithComments" />
                    <ds:SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1" />
                    <ds:Reference URI="#TS-7b0551e0-3c09-44e5-9de8-e1e55db97921">
                        <ds:Transforms>
                            <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#">
                                <InclusiveNamespaces PrefixList="ds" xmlns="http://www.w3.org/2001/10/xml-exc-c14n#" />
                            </ds:Transform>
                        </ds:Transforms>
                        <ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1" />
                        <ds:DigestValue>Reference1DigestValue</ds:DigestValue>
                    </ds:Reference>
                    <ds:Reference URI="#id-77b05a65-5962-4ad3-9987-068ff21bc387">
                        <ds:Transforms>
                            <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#" />
                        </ds:Transforms>
                        <ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1" />
                        <ds:DigestValue>Reference2DigestValue=</ds:DigestValue>
                    </ds:Reference>
                    <ds:Reference URI="#id-c0901773-b32f-4870-a934-6812ad67f5a6">
                        <ds:Transforms>
                            <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#" />
                        </ds:Transforms>
                        <ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1" />
                        <ds:DigestValue>Reference3DigestValue=</ds:DigestValue>
                    </ds:Reference>
                </ds:SignedInfo>
                <ds:SignatureValue>SignedInfo Signature Value</ds:SignatureValue>
                <ds:KeyInfo Id="KI-e3234134-1755-481b-a113-49ab4b692d94">
                    <wsse:SecurityTokenReference wsu:Id="STR-2a97bc36-9cb7-482d-90bb-2769b971d362">
                        <wsse:KeyIdentifier EncodingType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary" ValueType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3">Public Key</wsse:KeyIdentifier>
                    </wsse:SecurityTokenReference>
                </ds:KeyInfo>
            </ds:Signature>
            <wsu:Timestamp wsu:Id="TS-7b0551e0-3c09-44e5-9de8-e1e55db97921">
                <wsu:Created>2016-03-07T16:25:11Z</wsu:Created>
                <wsu:Expires>2016-03-07T16:35:11Z</wsu:Expires>
            </wsu:Timestamp>
        </wsse:Security>
        <ACATrnsmtManifestReqDtlType xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" wsu:Id="id-77b05a65-5962-4ad3-9987-068ff21bc387" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
            <PaymentYr xmlns="urn:us:gov:treasury:irs:ext:aca:air:7.0">2015</PaymentYr>
            <PriorYearDataInd xmlns="urn:us:gov:treasury:irs:ext:aca:air:7.0">0</PriorYearDataInd>
            <EIN xmlns="urn:us:gov:treasury:irs:common">EIN</EIN>
            <TransmissionTypeCd xmlns="urn:us:gov:treasury:irs:ext:aca:air:7.0">O</TransmissionTypeCd>
            <TestFileCd xmlns="urn:us:gov:treasury:irs:ext:aca:air:7.0">T</TestFileCd>
            <TransmitterNameGrp xmlns="urn:us:gov:treasury:irs:ext:aca:air:7.0">
                <BusinessNameLine1Txt>Busness Name</BusinessNameLine1Txt>
            </TransmitterNameGrp>
            <CompanyInformationGrp xmlns="urn:us:gov:treasury:irs:ext:aca:air:7.0">
                <CompanyNm>Busness Name</CompanyNm>
                <MailingAddressGrp>
                    <USAddressGrp>
                        <AddressLine1Txt>Street Address</AddressLine1Txt>
                        <CityNm xmlns="urn:us:gov:treasury:irs:common">City</CityNm>
                        <USStateCd>State</USStateCd>
                        <USZIPCd xmlns="urn:us:gov:treasury:irs:common">Zip</USZIPCd>
                    </USAddressGrp>
                </MailingAddressGrp>
                <ContactNameGrp>
                    <PersonFirstNm>FirstName</PersonFirstNm>
                    <PersonLastNm>Last Name</PersonLastNm>
                </ContactNameGrp>
                <ContactPhoneNum>Contact Phone</ContactPhoneNum>
            </CompanyInformationGrp>
            <VendorInformationGrp xmlns="urn:us:gov:treasury:irs:ext:aca:air:7.0">
                <VendorCd>I</VendorCd>
                <ContactNameGrp>
                    <PersonFirstNm>FirstName</PersonFirstNm>
                    <PersonLastNm>Last Name</PersonLastNm>
                </ContactNameGrp>
                <ContactPhoneNum>Contact Phone</ContactPhoneNum>
            </VendorInformationGrp>
            <TotalPayeeRecordCnt xmlns="urn:us:gov:treasury:irs:ext:aca:air:7.0">2</TotalPayeeRecordCnt>
            <TotalPayerRecordCnt xmlns="urn:us:gov:treasury:irs:ext:aca:air:7.0">1</TotalPayerRecordCnt>
            <SoftwareId xmlns="urn:us:gov:treasury:irs:ext:aca:air:7.0">15A0000488</SoftwareId>
            <FormTypeCd xmlns="urn:us:gov:treasury:irs:ext:aca:air:7.0">1094/1095B</FormTypeCd>
            <BinaryFormatCd xmlns="urn:us:gov:treasury:irs:common">application/xml</BinaryFormatCd>
            <ChecksumAugmentationNum xmlns="urn:us:gov:treasury:irs:common">HASH</ChecksumAugmentationNum>
            <AttachmentByteSizeNum xmlns="urn:us:gov:treasury:irs:common">8919</AttachmentByteSizeNum>
            <DocumentSystemFileNm xmlns="urn:us:gov:treasury:irs:ext:aca:air:7.0">1094B_Request_TCC_Timestamp.xml</DocumentSystemFileNm>
        </ACATrnsmtManifestReqDtlType>
        <ACABulkBusinessHeaderRequestType xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" wsu:Id="id-c0901773-b32f-4870-a934-6812ad67f5a6" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
            <UniqueTransmissionId xmlns="urn:us:gov:treasury:irs:ext:aca:air:7.0">UniqueTransmissionId</UniqueTransmissionId>
            <Timestamp xmlns="urn:us:gov:treasury:irs:common">2016-03-07T08:25:08Z</Timestamp>
        </ACABulkBusinessHeaderRequestType>
    </soap:Header>
    <soap:Body>
        <ns0:ACABulkRequestTransmitter xmlns:ns0="urn:us:gov:treasury:irs:msg:irsacabulkrequesttransmitter" version="1.0">
            <ns1:BulkExchangeFile xmlns:ns1="urn:us:gov:treasury:irs:common">
                <xop:Include xmlns:xop="http://www.w3.org/2004/08/xop/include" href="cid:1094B_Request_TCC_Timestamp.xml" />
            </ns1:BulkExchangeFile>
        </ns0:ACABulkRequestTransmitter>
    </soap:Body>
</soap:Envelope>

--------------030003010806000401010306
Content-Type: application/xml
Content-ID: 1094B_Request_TCC_Timestamp.xml
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment; name="1094B_Request_TCC_Timestamp.xml"
name: 1094B_Request_TCC_Timestamp.xml

<Form109495BTransmittalUpstream xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:us:gov:treasury:irs:msg:form1094-1095Btransmitterupstreammessage">
  <Form1094BUpstreamDetail recordType="" lineNum="0" xmlns="urn:us:gov:treasury:irs:ext:aca:air:7.0">
    <SubmissionId>1</SubmissionId>
    <TaxYr xmlns="urn:us:gov:treasury:irs:common">2015</TaxYr>
    <BusinessName>
      <BusinessNameLine1Txt>FilerBusinessName</BusinessNameLine1Txt>
    </BusinessName>
    <TINRequestTypeCd xmlns="urn:us:gov:treasury:irs:common">BUSINESS_TIN</TINRequestTypeCd>
    <EmployerEIN xmlns="urn:us:gov:treasury:irs:common">000000151</EmployerEIN>
    <ContactNameGrp>
      <PersonFirstNm>TestFirstName</PersonFirstNm>
      <PersonLastNm>TestLastName</PersonLastNm>
    </ContactNameGrp>
    <ContactPhoneNum>Phone</ContactPhoneNum>
    <MailingAddressGrp>
      <USAddressGrp>
        <AddressLine1Txt>StreetAddress</AddressLine1Txt>
        <CityNm xmlns="urn:us:gov:treasury:irs:common">City</CityNm>
        <USStateCd>State</USStateCd>
        <USZIPCd xmlns="urn:us:gov:treasury:irs:common">Zip</USZIPCd>
      </USAddressGrp>
    </MailingAddressGrp>
    <Form1095BAttachedCnt>2</Form1095BAttachedCnt>
    <Form1095BUpstreamDetail recordType="" lineNum="0">
      <RecordId>1</RecordId>
      <CorrectedInd>0</CorrectedInd>
      <TaxYr xmlns="urn:us:gov:treasury:irs:common">2015</TaxYr>
      <ResponsibleIndividualGrp>
        <ResponsibleIndividualName>
          <PersonFirstNm>TestFirstName</PersonFirstNm>
          <PersonMiddleNm>TestMiddleName</PersonMiddleNm>
          <PersonLastNm>TestLastName</PersonLastNm>
        </ResponsibleIndividualName>
        <TINRequestTypeCd xmlns="urn:us:gov:treasury:irs:common">INDIVIDUAL_TIN</TINRequestTypeCd>
        <SSN xmlns="urn:us:gov:treasury:irs:common">000000101</SSN>
        <MailingAddressGrp>
          <USAddressGrp>
            <AddressLine1Txt>StreetAddress</AddressLine1Txt>
            <CityNm xmlns="urn:us:gov:treasury:irs:common">City</CityNm>
            <USStateCd>State</USStateCd>
            <USZIPCd xmlns="urn:us:gov:treasury:irs:common">Zip</USZIPCd>
         

Answer 1

Sorry, I did not see your comments on the other post.

Unfortunately, I don't recall what exactly I had to do to fix the issue I reported in this post. I've had to go through a lot of iterations of code trying different things in order to get to where I am, and I'm still somewhere in the last half of the tunnel that is this project.

However, in reviewing what you posted and comparing against what I (currently) have working (with errors, but not the above error), try removing the two extra dash characters from beginning of your boundary definition.

You defined your MIME boundary as --------------030003010806000401010306 but the references in your parts have two extra dashes at the beginning of your reference.

Here's what I have in my current "working" code.

• I have my boundary set to something simple: MIME_boundary.
• In the MIME Header prior to the SOAP Envelope root element AND prior to the start of the FormData file, it says --MIME_boundary.
• Then, at the bottom of the request, it says --MIME_boundary--.