# Parties vs Nested Parties

**URL:** <https://forum.fixtrading.org/t/parties-vs-nested-parties/11787>\
**Category:** General Q&A\
**Tags:** allocations, xid\_160838, imported\
**Created:** [February 2, 2006, 7:55pm UTC](https://forum.fixtrading.org/t/parties-vs-nested-parties/11787 "2006-02-02T19:55:19Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![fixprotocol36\_x](https://avatars.discourse-cdn.com/v4/letter/f/919ad9/32.png) [@fixprotocol36\_x](https://forum.fixtrading.org/u/fixprotocol36_x)\
**Post date:** [February 2, 2006, 7:55pm UTC](https://forum.fixtrading.org/t/parties-vs-nested-parties/11787/1 "2006-02-02T19:55:19Z")

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Imported from previous forum

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**Author:** ![fixprotocol36\_x](https://avatars.discourse-cdn.com/v4/letter/f/919ad9/32.png) [@fixprotocol36\_x](https://forum.fixtrading.org/u/fixprotocol36_x)\
**Post date:** [February 2, 2006, 7:55pm UTC](https://forum.fixtrading.org/t/parties-vs-nested-parties/11787/2 "2006-02-02T19:55:19Z")

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Can someone tell me the difference between Parties and Nested Parties? When would I use one or the other. Specificaly, in the 4.3 release notes, I see the following bullet points and I am trying to figure out why in the Allocation ACK message ExecBroker would be in the Parties field yet in the Allocation message ExecBroker would be in the NestedParties field.

\*\*Removed BrokerOfCredit, ClientID, and ExecBroker fields and replaced with component block in Allocation message.  
\*\*Removed ClientID and ExecBroker fields and replaced with component block in Allocation ACK message.

Thanks in advance.

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**Author:** ![scott.atwell](https://avatars.discourse-cdn.com/v4/letter/s/51bf81/32.png) [@scott.atwell](https://forum.fixtrading.org/u/scott.atwell)\
**Post date:** [February 2, 2006, 8:02pm UTC](https://forum.fixtrading.org/t/parties-vs-nested-parties/11787/3 "2006-02-02T20:02:44Z")

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The Allocation message contains block-level details at the “overall” level plus a repeating group of account-level details (“splits”). is defined at the overall, block-level. is defined at the split, account-level. The distinction is important when there is a need to provide party-related information at more than one level within a given message and to avoid re-use of the same field (tag) in different contexts within a message instance.

> Can someone tell me the difference between Parties and Nested Parties?  
> When would I use one or the other. Specificaly, in the 4.3 release  
> notes, I see the following bullet points and I am trying to figure out  
> why in the Allocation ACK message ExecBroker would be in the Parties  
> field yet in the Allocation message ExecBroker would be in the  
> NestedParties field.
> 
> \*\*Removed BrokerOfCredit, ClientID, and ExecBroker fields and replaced  
> with component block in Allocation message. \*\*Removed  
> ClientID and ExecBroker fields and replaced with component  
> block in Allocation ACK message.
> 
> Thanks in advance.