From FIXwiki

FIX Message RegistrationInstructionsResponse (MsgType=p)

MsgType	FIX Specification	First introduced	Deprecated
MsgType=p	PostTrade messages - RegistrationInstruction	FIX.4.3

The Registration Instructions Response message type may be used by broker or fund manager (for CIV) in response to a Registration Instructions message submitted by an institution or retail intermediary for an order or for an allocation.

The Registration Instructions Response message is used to:

1. confirm the receipt of a Registration Instructions message

2. confirm changes to an existing Registration Instructions message (i.e. accept cancel and replace requests)

3. relay Registration Instructions status information

4. relay assigned client and account Ids for Registration Instructions messages with RegTransType=New

5. reject Registration Instructions message

Each Registration Instructions Response message contains a RegistStatus field which is used to communicate the current state of the Registration Instructions as understood by the broker or fund manager. The Registration Instruction statuses are as follows (in highest to lowest precedence):

Accepted

Rejected

Held

Message Contents By FIX Version

Notes

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