问DocuSign API:当通过标记填充模板的PDF表单字段时，为什么每个文档的左上角会重复文本选项卡？

EN

# Returns a Tabs object with name and date tabs. For envelopes that only contain those two fields.
def generate_name_date_tabs(name, date):
    name = Text(document_id = '1', page_number = '1', recipient_id = '1', value=name, tab_label = 'eh_broker_name')
    date = Text(document_id = '1', page_number = '1', recipient_id = '1', value=date, tab_label = 'eh_sign_date')

    return Tabs(text_tabs=[name, date])

def create_application_envelope(destination_email, base64_file_content, signer_name="PlanProvide", signer_tabs=None, is_embedded_signing=False):
    # Create an application envelope
    # docusign_auth.DSClient.login("jwt")
    account_id = session["ds_account_id"]
    envelope_api = docusign_api_handler.get_envelope_api()
    templates_api = docusign_api_handler.get_templates_api()

    access_code = generate_access_code()
    
    signer = Signer(
        email=destination_email,
        name=signer_name,
        recipient_id="1",
        routing_order="1",
        role_name="signer",
        # Use a six-character access code so URL doesn't expire
        access_code=access_code,
        tabs=signer_tabs
    )

    doc = Document(
        document_base64 = base64_file_content,
        name = "Your application generated by PlanProvide",
        file_extension = "pdf",
        document_id = 1,
        # Detect Adobe form field names
        transform_pdf_fields = True
    )
    documents = [doc]
    template_req_object = EnvelopeTemplate(
        documents=documents, email_subject="Please sign this document",
        recipients=Recipients(signers=[signer]),
        description="Template created via the API",
        name="Application Template",
        shared="false",
        status="created"
    )
    try:
        res = templates_api.create_template(account_id=account_id, envelope_template=template_req_object)
    except Exception as e:
        raise DocusignError(e)

    try:
        template_id = res.templates[0].template_id
    except:
        template_id = res.template_id
    envelope_definition = EnvelopeDefinition(
        email_subject="Please sign this document sent from the Python SDK",
        template_id=template_id,
        template_roles=[signer],
        status="sent"  # requests that the envelope be created and sent.
    )
    # Send it to an email
    try:
        results = envelope_api.create_envelope(account_id=account_id, envelope_definition=envelope_definition)
    except Exception as e:
        raise DocusignError(e)

    return {
        "envelope_id": results.envelope_id,
        "access_code": access_code
    }

tabs = docusign_api_handler.generate_name_date_tabs(name, datetime.today().strftime('%m-%d-%y'))

    try:
        resp = application_services.create_application_envelope(
            destination_email,
            base64_file_content,
            signer_name=name,
            signer_tabs=tabs, is_embedded_signing=False)