Correction

In an event of making a mistake when entering information into the match scoresheet, the problem should be fixed and correct scores should be published.

Overview

There are two ways of fixing mistakes around wrong scores, whether the latest point scored (Undo) should be fixed, or a previously assigned score (Correction) should be amended. These two messages are different, but structurally similar packets.

1. Undo

2. Correction (Score Edit)

1. Undo

The last scored point can be undone due to a point decrement or a penalty point decrement action. Semantically, an Undo packet means the official chose to revert the most recently emitted packet(s). Under the scores field a snapshot should be found of what is understood to be the latest scores of the match after taking into account the effect of the undo. Also included is a field named undoneEventSeqNums which details which packets were removed. In case of an Undo packet, it's always seqNum - 1.

{
    "eventElementType": "Undo",
    "id": 0,
    "seqNum": 27,
    "matchScore": {
        "pointsA": 0,
        "pointsB": 0
    },
    "scores": [
        {
            "pointsA": 0,
            "pointsB": 11
        },
        {
            "pointsA": 5,
            "pointsB": 4
        },
        {
            "pointsA": 0,
            "pointsB": 0
        },
        {
            "pointsA": 0,
            "pointsB": 0
        },
        {
            "pointsA": 0,
            "pointsB": 0
        }
    ],
    "game": 2,
    "timestamp": "1970-01-01T00:00:00.000Z",
     "undoneEventSeqNums": [
    26
    ]
}

1. Correction (Score Edit)

A Correction packet means the official modified packets that occurred at some point in the past. Like Undo packets, under the scores field a snapshot of what is understood to be the current state of the match after taking into account the effect of the correction(s).

{
    "eventElementType": "Correction",
    "id": 0,
    "seqNum": 27,
    "scores": [
        {
            "pointsA": 0,
            "pointsB": 11
        },
        {
            "pointsA": 5,
            "pointsB": 4
        },
        {
            "pointsA": 0,
            "pointsB": 0
        },
        {
            "pointsA": 0,
            "pointsB": 0
        },
        {
            "pointsA": 0,
            "pointsB": 0
        }
    ],
    "matchScore": {
        "pointsA": 0,
        "pointsB": 0
    },
    "game": 2,
    "timestamp": "1970-01-01T00:00:00.000Z",
}