NoAllocs in Replace/Cancel Messages

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Imported from previous forum

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What should be the value of NoAllocs in a cancel allocation message? The FIX 4.2 spec is not explicit about this. Since all previous allocations are cancelled, I think the value of NoAllocs should be 0.

In a similar manner, the replace should only contain the allocs that are still valid.

Is my understanding correct? If not, what should be filled in for the allocation sub-groups in replace and cancel messages.

Thanks,
Puneet

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Puneet,

Typically when AllocTransType=Cancel you do not provide any allocation groups, so you do not need to set the NoAllocs field at all.

For a replace, the new allocation groups will override those specified in the original Allocation message. So yes, you should provide only those allocations groups that are still valid.

Dan Norcross
TransactTools
www.transacttools.net

What should be the value of NoAllocs in a cancel allocation message? The
FIX 4.2 spec is not explicit about this. Since all previous allocations
are cancelled, I think the value of NoAllocs should be 0.

In a similar manner, the replace should only contain the allocs that are
still valid.

Is my understanding correct? If not, what should be filled in for the
allocation sub-groups in replace and cancel messages.

Thanks, Puneet

4

Dan,

Thanks for the reply. See below.

Puneet,

Typically when AllocTransType=Cancel you do not provide any allocation
groups, so you do not need to set the NoAllocs field at all.

The NoAllocs tag is mandatory according to the spec. So it will need to be filled in with a zero value for cancel. Or do FIX implementations accept allocation cancel messages with a missing NoAllocs tag?

For a replace, the new allocation groups will override those specified
in the original Allocation message. So yes, you should provide only
those allocations groups that are still valid.

Dan Norcross TransactTools www.transacttools.net

What should be the value of NoAllocs in a cancel allocation message?
The FIX 4.2 spec is not explicit about this. Since all previous
allocations are cancelled, I think the value of NoAllocs should be 0.

In a similar manner, the replace should only contain the allocs that
are still valid.

Is my understanding correct? If not, what should be filled in for the
allocation sub-groups in replace and cancel messages.

Thanks, Puneet