Open Catalog Interface (OCI) - Is CRM/ISA ready to be an External Catalog?

Question

I have found much information here and on help.sap.com talking about how to set up an external catalog to be part of our catalog(s). But, there is a severe lack of information to educate myself as to whether our catalog(s) are ready to be added as an external catalog to our customer's SRM system for example.
The only valuable information I have been able to find on how to be sure that our CRM/ISA Partnershop can be used by our business partners in their various (SRM) procurement systems is here:
http://help.sap.com/saphelp_crm40sr1/helpdata/en/73/fd147fcaaf41489508aaac8e3e37b5/frameset.htm
We have a specific request that our CRM/ISA Partnershop be made available via our business partner's SRM system.  I can find no guide to help me provide the requested information without basically just guessing on my part.
This is what they provided as a worksheet to return. 
I assume the following or would like additional input:
1)  They will need a Userid and Password.
2)  For Language, we currently only support EN.  Would I enter EN or just leave blank?
3)  What do the following refer to?  (These are the fields as requested and their suggested value by our customer)
  ~OKCODE       ADDI
  ~TARGET       _top
  ~FORCETARGET       YES
  ~CALLER       CTLG
  HOOK_URL       (Assumed to be blank)
4)  These are the required OCI fields they would be expecting from the our catalog, but they can accept all OCI Release 4.0 fields...Assuming the connections from the above settings are made properly, will CRM automatically provide the approrpriate detail or do I need to set something somewhere?  All the XCM/DCM config settings for OCI seem to deal with an incoming External Catalog, not outgoing. 
OCI fields
<input type='hidden' name='NEW_ITEM-QUANTITY[1]' value='3'>
<input type='hidden' name='NEW_ITEM-DESCRIPTION[1]' value='Descriptio'>
<input type='hidden' name='NEW_ITEM-UNIT[1]' value='DZN'>
<input type='hidden' name='NEW_ITEM-PRICE[1]' value='1.62'>
<input type='hidden' name='NEW_ITEM-LEADTIME[1]' value='5'>
<input type='hidden' name='NEW_ITEM-CURRENCY[1]' value='USD'>
<input type='hidden' name='NEW_ITEM-MATGROUP[1]' value='44121704'>
5)  Do I need to 'do' anything not listed above to be sure our catalog(s) are ready to perform as requested?
Thanks for any clarification/links, etc
I've spent weeks off and on now to try to determine an answer I could feel confident in.

Answer 1

1/25/07 - Found a bit more info, but still need help determining if there are any additional settings/configs we need to make before starting to test with our Business Partner.
http://help.sap.com/saphelp_crm40sr1/helpdata/en/19/3a74482f5811d5b3890050da4cccf0/frameset.htm
I did these steps already, but have not tested yet:
Customizing and Settings in CRM / Internet Sales
Settings for receiving purchase orders in CRM
Purchase order without reference to a quotation:
In the CRM Business Connector, an XML purchase order is received via HTTP and it is converted into a sales order IDOC. This IDOC is then transferred to CRM and is posted there.
The delivered mapping service expects a purchase order in the OLD_EBP XML format, which is transformed into a NEW EBP XML, xCBL and finally a CRM IDOC XML.
The following settings must be made in CRM:
· Creating a partner profile for the sender
Path in SAP Menu
Tools -> Business Communication -> IDoc-Basis -> Administration -> Partner profile.  
Partner type: Customer
Partner number: Number of the sold-to party in CRM
Transaction code: APLI (Individual IDoc processing)
Message type: CRMXIF_ORDER_SAVE_M
(key fields of table EDPP1:
-PARNUM partner number
-PARTYP partner type)
·         To view CRM address management errors in the document, the parameter CRM_USER_LEVEL must be set to value 9.
Path in SAP Menu
System -> User profile -> Own data -> Parameters.
I have asked my Basis contact to look into this portion:
Business Connector
Install a Business Connector 4.0 or higher.
Required packages:
· Sap_crm
· Sap_crm_customizing
· XSLT (only for BC 4.0, not required for BC 4.6)
After processing the purchase order that was received first, an inactive routing rule is created that is completed and activated.
Path in BC
BC Manager -> Adapters -> Routing -> Edit.
Transport: ALE (R/3 IDoc)
SAP Destination:  
The ports must be activated and the service EbpXmlToRfc must be accessible before the Business Connector can receive documents.
Some CRM settings are hard coded in the transformations. They are in the file BasicOrderSettings.xsl, that are in the directory ...ServerpackagesSap_crmxsltincludesxcbl2sapcrm_xif.
These are:
Transaction type: TA (standard order)
Item object type: BUS2000131(sales item CRM)
Text ID under which the order text is created in the CRM order: 1000 (customer note)
Make sure that all of the available Business Connector patches are installed.
Our customer contact says they went with WebMethod instead of Business Connector, but I'm hoping we can make it work using BC without having to research yet another piece of the puzzle.
Any additional detail/advice from anyone that's set up their Partnershop to be connected to SRM EBP via OCI?
Message was edited by:
        Mike Anecito
    1/25/07