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FpML-VALU Updated RequestPositionReport and RequestPortfolio definitions



I've updated this proposal based on input from today's BPWG meeting.  (See
attached).  Some of the changes slightly adjust existing PRWG 4.1 or 4.2
definitions, but I believe that the changes are small enough to be
considered minor errata.  However, there is one larger issue that I've
identified below.

I've made the following changes:

1) As decided at the BPWG meeting, I changed the content model of
"RequestPositionReport" and "RequestPortfolio" to provide a choice between
a)a data set name or portfolio (depending on the message) and b) the
requested positions. This eliminates a great deal of optionality in the
messages.  Since these types are new for 4.3, there is no issue with making
these changes.  See the attached .JPGs for a visual representation of the
resulting structure.

2) I've changed the definitions of "dataSetName" in 2 places to
"xsd:normalizedString" from "xsd:string".  This slightly changes the
definition of the PositionReport from FpML 4.2.

3) I've changed the definition of "Valuation" to make the cardinality of
"quote" to be 1..unbounded (it was 0..unbounded).  I believe that the
original definition was in error as the documentation of the element says
that there should be "one or more" quotes, and I can't think of a case where
it makes sense to have 0 quote elements here.  Also, none of the existing
examples appear to use 0 quotes.  This slightly changes the definition of
several types from FpML 4.1 and 4.2, but I believe corrects an error.

4) I've moved the definition of the "RequestedPositions" type to the
valuation subschema to allow it to be used by both the reporting and
reconciliation subschemas, and made a few internal changes to that type with
no effect on the content model to resolve dependency issues.

PRWG members, please let me know if you have any concerns about any of the
above changes to existing definitions.

BPWG and PRWG members, please let me know if you have any feedback on the
above messages.

I identified one additional concern while testing the latest changes:  The
latest Position definition makes the positionId mandatory.  This causes the
existing 4.2 PRWG position report examples, which do not include the
positionId, to fail schema validation.  We can certainly update the examples
to include position IDs, but it occurred to me that if we make this change
in FpML 4.3 only, then 4.3 will not be backwardly compatible with 4.2 in the
area of positions.   I don't suppose anyone is really that concerned about
this, but I do think that it violates the change control guidelines, so we
should address this somehow.  It seems to me that we have a few options for
resolving this, e.g.:
- make position ID optional in the position report, and restrict the type to
make it mandatory in the define portfolio message.
- add the positionId to Position in the FpML 4.2 trial recommendation.
- just update the example and go to the Standards Committee for approval of
the change.  (We might want to document somewhere in 4.2 that the change is
planned...)

Please let me know if you have any comments or suggestions on any of this.

Best regards,

Brian Lynn, CTO
Global Electronic Markets, http://global-emarkets.com
High-speed FpML matching, reconciliation, and validation:
http://fpml-mediator.com
 

Attachment: QueryPortfolio.jpg
Description: JPEG image

Attachment: RequestPortfolio.jpg
Description: JPEG image

Attachment: RequestPositionReport.jpg
Description: JPEG image

Attachment: fpml-valuation-4-2.xsd
Description: Binary data

Attachment: fpml-reconciliation-4-2.xsd
Description: Binary data

Attachment: fpml-reporting-4-2.xsd
Description: Binary data