The Allocation ACK <P> message is used to acknowledge the receipt and status of an Allocation <J> message.
It is possible that multiple Allocation ACK <P> messages can be generated for a single allocation to detail the receipt and then the acceptance or rejection of the Allocation <J> message.
Insert here the set of "<Parties>" (firm identification) fields
Date/Time AllocationACK generated
Required for AllocStatus <87> = 1 (rejected)
Can include explanation for AllocRejCode <88> = 7 (other)
Must be set if EncodedText <355> field is specified and must immediately precede it.
Encoded (non-ASCII characters) representation of the Text <58> field in the encoded format specified via the MessageEncoding <347> field.