Sample cXML Credit Memo Backed by a PO

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE cXML SYSTEM "http://xml.cxml.org/schemas/cXML/1.2.020/InvoiceDetail.dtd">
<cXML payloadID="1240598937@SUBDOMAIN.coupahost.com" timestamp="2017-08-11T01:24:51-07:00" xml:lang="en-US">
	 <Header>
			<From>
				 <Credential domain="DUNS">
						<Identity>anything</Identity>
				 </Credential>
			</From>
			<To>
				 <Credential domain="networkID">
						<Identity>anything</Identity>
				 </Credential>
			</To>
			<Sender>
				 <Credential domain="DUNS">
						<Identity>anything</Identity>
						<SharedSecret>anything</SharedSecret>
				 </Credential>
				 <UserAgent />
			</Sender>
	 </Header>
	 <Request deploymentMode="production">
			<InvoiceDetailRequest>
				 <InvoiceDetailRequestHeader invoiceID="creditMemoID1" purpose="creditMemo" operation="new" invoiceDate="2017-08-11T01:24:51-07:00">
						<InvoiceDetailHeaderIndicator />
						<InvoiceDetailLineIndicator isAccountingInLine="yes" />
						<DocumentReference payloadID="InvoieID1" />
						<PaymentTerm payInNumberOfDays="30" />
						<Extrinsic name="CustomFields">
							 <IdReference identifier="original_invoice_date" domain="CustomField">
									<Description xml:lang="en-US">2017-08-11T01:24:51-07:00</Description>
							 </IdReference>
						</Extrinsic>
						<Extrinsic name="CustomFields">
							 <IdReference identifier="original_invoice" domain="CustomField">
									<Description xml:lang="en-US">InvoiceID1</Description>
							 </IdReference>
						</Extrinsic>
				 </InvoiceDetailRequestHeader>
				 <InvoiceDetailOrder>
						<InvoiceDetailOrderInfo>
							 <OrderReference orderDate="ORDER_DATE">
									<DocumentReference payloadID="ORDER_NUMBER" />
							 </OrderReference>
							 <SupplierOrderInfo orderID="ORDER_NUMBER" />
						</InvoiceDetailOrderInfo>
						<InvoiceDetailItem invoiceLineNumber="1" quantity="1">
							 <UnitOfMeasure>EA</UnitOfMeasure>
							 <UnitPrice>
									<Money currency="USD">100</Money>
							 </UnitPrice>
							 <InvoiceDetailItemReference lineNumber="1">
									<ItemID>
										 <SupplierPartID>partnumebr1</SupplierPartID>
									</ItemID>
									<Description xml:lang="en-US" />
							 </InvoiceDetailItemReference>
							 <SubtotalAmount>
									<Money currency="USD">100</Money>
							 </SubtotalAmount>
							 <Tax>
									<Money currency="USD">=</Money>
									<Description xml:lang="en-US">0</Description>
							 </Tax>
						</InvoiceDetailItem>
				 </InvoiceDetailOrder>
				 <InvoiceDetailSummary>
						<SubtotalAmount>
							 <Money currency="USD">100</Money>
						</SubtotalAmount>
						<Tax>
							 <Money currency="USD" />
							 <Description xml:lang="en-US" />
							 <TaxDetail purpose="tax" category="sales" percentageRate="0.0000">
									<TaxableAmount>
										 <Money currency="USD">100</Money>
									</TaxableAmount>
									<TaxAmount>
										 <Money currency="USD">0</Money>
									</TaxAmount>
							 </TaxDetail>
						</Tax>
						<SpecialHandlingAmount>
							 <Money currency="USD">0</Money>
						</SpecialHandlingAmount>
						<ShippingAmount>
							 <Money currency="USD">0</Money>
						</ShippingAmount>
						<InvoiceDetailDiscount percentageRate="0.0000">
							 <Money currency="USD">0</Money>
						</InvoiceDetailDiscount>
						<NetAmount>
							 <Money currency="USD">100</Money>
						</NetAmount>
						<DueAmount>
							 <Money currency="USD">100</Money>
						</DueAmount>
				 </InvoiceDetailSummary>
			</InvoiceDetailRequest>
	 </Request>
</cXML>