VallueMapping update through HTTP from SAP system

Question

Good day everyone,
For two weeks, I have been trying to send xml data from SAP to SAP PI through HTTP. The purpose of this interface is to update the Value Mapping entries in PI from SAP. I know, most of you might tell me to use ABAP proxies to make things more simple and easier. The reason why I did not use ABAP Proxy is because the SAP and SAP PI systems I'm using have different versions. I have SAP Netweaver 7.1 for my PI system and ECC 6.0 for my SAP. I believe it wouldn't be possible to use ABAP/JAVA proxies if the two systems are of different versions.
Here is what I have so far. I created a program to send an HTTP request using an RFC Destination. I used my own UserName and Password in the logon details in the RFC Destination. I used service adapter_plain. Here is the complete URL: http://<host>:<port>/sap/xi/adapter_plain... . I created the necessary objects in Integration Directory and the HTTP sender program. Below, you will see a sample of my payload and the error message I got. Can anyone help me how I could fix this error?
Payload:
<?xml version="1.0"?>
<ns1:ValueMappingReplication xmlns:ns1="http://sap.com/xi/XI/System"
xmlns:xsi="http://www.w3.org/2001/XMLSchemainstance">
<Item>
<Operation>Insert</Operation>
<GroupID>z80c0f608a1d11df928700ffb81a5a80</GroupID>
<Context>http://sap.com/xi/XI</Context>
<Identifier scheme="Blue"
agency="Yellow">GREEN</Identifier>
</Item>
</ns1:ValueMappingReplication>
Error:
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!-- Call Adapter -->
<SAP:Error xmlns:SAP="http://sap.com/xi/XI/Message/30"
xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/" SOAP:mustUnderstand="1"><SAP:Category>XIServer</SAP:Category>
<SAP:Code area="INTERNAL">UNAUTHORIZED</SAP:Code>
<SAP:P1>401 </SAP:P1>
<SAP:P2>Unauthorized</SAP:P2>
<SAP:P3>(See attachment HTMLError for details)</SAP:P3>
<SAP:P4/>
<SAP:AdditionalText/>
<SAP:Stack></SAP:Stack>
<SAP:Retry>M</SAP:Retry>
</SAP:Error>
Kind Regards,
Chris C.

Answer 1

>  Mapping entries in PI from SAP. I know, most of you might tell me to use ABAP proxies to make things more simple and easier. The reason why I did not use ABAP Proxy is because the SAP and SAP PI systems I'm using have different versions. I have SAP Netweaver 7.1 for my PI system and ECC 6.0 for my SAP. I believe it wouldn't be possible to use ABAP/JAVA proxies if the two systems are of different versions.
Of course this works.
I use APAB proxies with SAP R/3 4.7 to send value mapping data to PI 7.1
Copy the standard value mapping outbound interfaces to your own SWVC and genearate ABAP proxies for it.