# MiFID2 IDM (Investment Decision Maker) at Allocation.

**URL:** <https://forum.fixtrading.org/t/mifid2-idm-investment-decision-maker-at-allocation/14038>\
**Category:** General Q&A\
**Tags:** mifidii, foreign-exchange\
**Created:** [May 8, 2018, 2:03pm UTC](https://forum.fixtrading.org/t/mifid2-idm-investment-decision-maker-at-allocation/14038 "2018-05-08T14:03:16Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![markmarston](https://avatars.discourse-cdn.com/v4/letter/m/ed8c4c/32.png) [@markmarston](https://forum.fixtrading.org/u/markmarston)\
**Post date:** [May 8, 2018, 2:03pm UTC](https://forum.fixtrading.org/t/mifid2-idm-investment-decision-maker-at-allocation/14038/1 "2018-05-08T14:03:16Z")

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Hi,

I see parties (452) can have a value of 122 for IDM, however how should we represent this where there are two allocations (or more) within a leg, and each allocation has a separate IDM?

Regards Mark

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**Author:** ![deankauffman](https://avatars.discourse-cdn.com/v4/letter/d/a8b319/32.png) [@deankauffman](https://forum.fixtrading.org/u/deankauffman)\
**Post date:** [May 9, 2018, 12:04am UTC](https://forum.fixtrading.org/t/mifid2-idm-investment-decision-maker-at-allocation/14038/2 "2018-05-09T00:04:38Z")

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Mark,  
To have a party instance apply to a specific allocation then move it into the parties component appropriate to the allocation instance. In the AllocationInstruction(J) and AllocationReport(AS) messages that is NestedParties within AllocGrp.  
If the allocation instance applies to one leg of a multi-leg strategy use AllocLegRefID(2727) to refer to LegID(1788) within the instance of InstrumentLeg.  
Dean