Unable to process idocs via BD87 into workflow?

[Bakker, Paul]

Howdy, and a happy new year..
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We're upgrading to 4.6C, and we have implemented a custom workflow to
process incoming ORDRSP (order response) idocs.=20
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The partner profile of these idocs specifies that they be handled by a
workflow (instead of the usual input=20
function module). The process code for these idocs is 'ZRSP'.
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My problem is this: If one of these idocs goes into error, it seems
that, *because it is linked to a workflow*, I am unable to=20
reprocess it using BD87. The error message is:
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No function module for input process code ZRSP
Message no. B1 033
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Diagnosis
The function module which performs application input for input process
code ZRSP could not be determined.
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Procedure
Maintain ALE input methods.
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Is BD87 really so inflexible as to assume that all idocs are handled by
function modules?=20
Should I be using a different transaction to re-process these idocs?
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Or does SAP assume that all idocs linked to workflows will never need
BD87 reprocessing?
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thanks for your help!
Paul Bakker
Brisbane, Australia=20