# Sequence Reset with 43=N - URGENT

**URL:** <https://forum.fixtrading.org/t/sequence-reset-with-43-n-urgent/9571>\
**Category:** General Q&A\
**Tags:** xid\_161028, imported, 41-changes\
**Created:** [December 5, 2006, 12:38pm UTC](https://forum.fixtrading.org/t/sequence-reset-with-43-n-urgent/9571 "2006-12-05T12:38:35Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![harir\_x](https://avatars.discourse-cdn.com/v4/letter/h/8491ac/32.png) [@harir\_x](https://forum.fixtrading.org/u/harir_x)\
**Post date:** [December 5, 2006, 12:38pm UTC](https://forum.fixtrading.org/t/sequence-reset-with-43-n-urgent/9571/1 "2006-12-05T12:38:35Z")

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Imported from previous forum

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<div class="post-metadata">

**Author:** ![harir\_x](https://avatars.discourse-cdn.com/v4/letter/h/8491ac/32.png) [@harir\_x](https://forum.fixtrading.org/u/harir_x)\
**Post date:** [December 5, 2006, 12:38pm UTC](https://forum.fixtrading.org/t/sequence-reset-with-43-n-urgent/9571/2 "2006-12-05T12:38:35Z")

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Hello All,

Can someone let me know if Sequence Reset message should have 43=N or 43=Y?

Which message is correct of these 2?  
What should be the response for both?

8=FIX.4.1  
9=96  
35=4  
52=20061204-23:15:19  
122=20061204-23:15:19  
43=N  
97=N  
34=100  
49=xxxx  
56=yyyy  
123=Y  
36=100  
10=109

8=FIX.4.1  
9=96  
35=4  
52=20061204-23:15:19  
122=20061204-23:15:19  
43=Y  
97=N  
34=100  
49=xxxx  
56=yyyy  
123=Y  
36=100  
10=109

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<div class="post-metadata">

**Author:** ![fplpo\_x](https://avatars.discourse-cdn.com/v4/letter/f/7ab992/32.png) [@fplpo\_x](https://forum.fixtrading.org/u/fplpo_x)\
**Post date:** [December 5, 2006, 3:12pm UTC](https://forum.fixtrading.org/t/sequence-reset-with-43-n-urgent/9571/3 "2006-12-05T15:12:56Z")

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[original email was from Herby Raynaud - [herby.raynaud@transacttools.net](mailto:herby.raynaud@transacttools.net) ]  
Whenever you are communicating to your counterparty that a message with the currenty sequence number may have already been sent you must set the possdup flag to “Y”.

According to the FIX spec

Upon receipt of a Resend Request, the resender can respond in one of three ways:

1. retransmit the requested messages (in order) with the original sequence numbers and PossDupFlag set to “Y”
2. issue a SeqReset-GapFill with PossDupFlag set to “Y” message to replace the retransmission of administrative and application messages
3. issue a SeqReset-Reset with PossDupFlag set to “Y” to force sequence number synchronization

I hope this answers your question

> Hello All,
> 
> Can someone let me know if Sequence Reset message should have  
> 43=N or 43=Y?
> 
> Which message is correct of these 2? What should be the response for  
> both?
> 
> 8=FIX.4.1 9=96 35=4 52=20061204-23:15:19 122=20061204-23:15:19 43=N 97=N  
> 34=100 49=xxxx 56=yyyy 123=Y 36=100 10=109
> 
> 8=FIX.4.1 9=96 35=4 52=20061204-23:15:19 122=20061204-23:15:19 43=Y 97=N  
> 34=100 49=xxxx 56=yyyy 123=Y 36=100 10=109