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MAS_CP_CHANGE

MAS_CP_CHANGE records pending changes to the current MAS configuration.

Deprecation Warning

This table is in the HISTORICAL TABLES package, so is likely deprecated.

Obsolete; Replaced by MSATS

Source

MAS_CP_CHANGE updates daily with each MAS export.

Note

Expiry date: When the Expiry date on a change record is reached, the change record is deleted.

Meter Read Date: only used in specific circumstances. For more details, refer to MAS documentation. The meter read date is not cleared if it becomes unusable (e.g. due to change of Metering Type or the passage of time).

Column Schema

NMI

National Metering Identifier

SQL Type: VARCHAR2(10) Polars Type: str

This column is mandatory, and a primary key.

AGGREGATE_DATA

Aggregate data Flag (YIN)

SQL Type: VARCHAR2(1) Polars Type: pl.Boolean

This column is not mandatory.

AVERAGE_DAILY_LOAD_KWH

Average Daily load in KWh

SQL Type: NUMBER(8,0) Polars Type: pl.Int32

This column is not mandatory.

CITY_SUBURB

Connection point City/Suburb

SQL Type: VARCHAR2(30) Polars Type: str

This column is not mandatory.

CP_DETAIL_1

Connection point detail 1

SQL Type: VARCHAR2(30) Polars Type: str

This column is not mandatory.

CP_DETAIL_2

Connection point detail 2

SQL Type: VARCHAR2(30) Polars Type: str

This column is not mandatory.

CP_NAME

Connection point name

SQL Type: VARCHAR2(30) Polars Type: str

This column is not mandatory.

CP_NEW_SECURITY_CODE

New Security Code

SQL Type: VARCHAR2(4) Polars Type: str

This column is not mandatory.

CP_OLD_SECURITY_CODE

Old Security Code

SQL Type: VARCHAR2(4) Polars Type: str

This column is not mandatory.

CREATE_DATE

Set by the system with today's date when the change record is created.

Warning

Despite what the name suggests, this is a datetime, not a date.

SQL Type: DATE Polars Type: pl.Datetime()

This column is not mandatory.

Example: 2026/01/20 00:05:00

CURRENT_CHANGE_DATE

Current change date

Warning

Despite what the name suggests, this is a datetime, not a date.

SQL Type: DATE Polars Type: pl.Datetime()

This column is not mandatory.

Example: 2026/01/20 00:05:00

DISTRIBUTION_LOSS

Distribution loss factors

SQL Type: NUMBER(5,4) Polars Type: pl.Float64

This column is not mandatory.

EXPIRY_DATE

Set by the system (and cannot be changed).

Warning

Despite what the name suggests, this is a datetime, not a date.

SQL Type: DATE Polars Type: pl.Datetime()

This column is not mandatory.

Example: 2026/01/20 00:05:00

INITIAL_CHANGE_DATE

Initial change date

Warning

Despite what the name suggests, this is a datetime, not a date.

SQL Type: DATE Polars Type: pl.Datetime()

This column is not mandatory.

Example: 2026/01/20 00:05:00

JURISDICTION

Area; for application of rules

SQL Type: VARCHAR2(3) Polars Type: str

This column is not mandatory.

LASTCHANGED

Last changed date.

For more information, see the dedicated documentation page.

SQL Type: DATE Polars Type: pl.Datetime()

This column is not mandatory.

Example: 2026/01/20 00:05:00

METER_READ_DATE

Date of meter reading

Warning

Despite what the name suggests, this is a datetime, not a date.

SQL Type: DATE Polars Type: pl.Datetime()

This column is not mandatory.

Example: 2026/01/20 00:05:00

METERING_TYPE

Type of metering installation (e.g. BASIC, MRIM, COMMS)

SQL Type: VARCHAR2(9) Polars Type: pl.Categorical

This column is not mandatory.

NEW_FINANCIAL_PARTICIPANT

New FRMP

SQL Type: VARCHAR2(10) Polars Type: str

This column is not mandatory.

NEW_FRMP_OK

New FRMP approval flag

SQL Type: VARCHAR2(1) Polars Type: pl.Boolean

This column is not mandatory.

NEW_FRMP_TEXT

New FRMP text field

SQL Type: VARCHAR2(30) Polars Type: str

This column is not mandatory.

NEW_LNSP_OK

New LNSP approval flag

SQL Type: VARCHAR2(1) Polars Type: pl.Boolean

This column is not mandatory.

NEW_LOCAL_NETWORK_PROVIDER

New Local Network Provider

SQL Type: VARCHAR2(10) Polars Type: str

This column is not mandatory.

NEW_LOCAL_RETAILER

New Local Retailer

SQL Type: VARCHAR2(10) Polars Type: str

This column is not mandatory.

NEW_LR_OK

New LR approval flag

SQL Type: VARCHAR2(1) Polars Type: pl.Boolean

This column is not mandatory.

NEW_LR_TEXT

New LR text field

SQL Type: VARCHAR2(30) Polars Type: str

This column is not mandatory.

NEW_LSNP_TEXT

New LNSP text field (LNSP misspelt in name)

SQL Type: VARCHAR2(30) Polars Type: str

This column is not mandatory.

NEW_MDA_OK

New MDA approval flag

SQL Type: VARCHAR2(1) Polars Type: pl.Boolean

This column is not mandatory.

NEW_MDA_TEXT

New MDA text field

SQL Type: VARCHAR2(30) Polars Type: str

This column is not mandatory.

NEW_METERING_DATA_AGENT

New Metering Data Agent

SQL Type: VARCHAR2(10) Polars Type: str

This column is not mandatory.

NEW_RESPONSIBLE_PERSON

New Responsible Person

SQL Type: VARCHAR2(10) Polars Type: str

This column is not mandatory.

NEW_RETAILER_OF_LAST_RESORT

New Retailer of Last Resort

SQL Type: VARCHAR2(10) Polars Type: str

This column is not mandatory.

NEW_ROLR_OK

New ROLR approval flag

SQL Type: VARCHAR2(1) Polars Type: pl.Boolean

This column is not mandatory.

NEW_ROLR_TEXT

New ROLR text field

SQL Type: VARCHAR2(30) Polars Type: str

This column is not mandatory.

NEW_RP_OK

New RP approval flag

SQL Type: VARCHAR2(1) Polars Type: pl.Boolean

This column is not mandatory.

NEW_RP_TEXT

New RP text field

SQL Type: VARCHAR2(30) Polars Type: str

This column is not mandatory.

NMI_CLASS

Class of National Metering Identifier to allow for different business rules to apply

SQL Type: VARCHAR2(9) Polars Type: str

This column is not mandatory.

OLD_FINANCIAL_PARTICIPANT

Old FRMP

SQL Type: VARCHAR2(10) Polars Type: str

This column is not mandatory.

OLD_FRMP_OK

Old FRMP approval flag

SQL Type: VARCHAR2(1) Polars Type: pl.Boolean

This column is not mandatory.

OLD_FRMP_TEXT

Old FRMP text field

SQL Type: VARCHAR2(30) Polars Type: str

This column is not mandatory.

OLD_LNSP_OK

Old LNSP approval flag

SQL Type: VARCHAR2(1) Polars Type: pl.Boolean

This column is not mandatory.

OLD_LOCAL_NETWORK_PROVIDER

Old Local Network Provider

SQL Type: VARCHAR2(10) Polars Type: str

This column is not mandatory.

OLD_LOCAL_RETAILER

Old Local Retailer

SQL Type: VARCHAR2(10) Polars Type: str

This column is not mandatory.

OLD_LR_OK

Old LR approval flag

SQL Type: VARCHAR2(1) Polars Type: pl.Boolean

This column is not mandatory.

OLD_LR_TEXT

Old LR text field

SQL Type: VARCHAR2(30) Polars Type: str

This column is not mandatory.

OLD_LSNP_TEXT

Old LNSP text field (LNSP misspelt in name)

SQL Type: VARCHAR2(30) Polars Type: str

This column is not mandatory.

OLD_MDA_OK

Old MDA approval flag

SQL Type: VARCHAR2(1) Polars Type: pl.Boolean

This column is not mandatory.

OLD_MDA_TEXT

Old MDA text field

SQL Type: VARCHAR2(30) Polars Type: str

This column is not mandatory.

OLD_METERING_DATA_AGENT

Old Metering Data Agent

SQL Type: VARCHAR2(10) Polars Type: str

This column is not mandatory.

OLD_RESPONSIBLE_PERSON

Old Responsible Person

SQL Type: VARCHAR2(10) Polars Type: str

This column is not mandatory.

OLD_RETAILER_OF_LAST_RESORT

Old Retailer of Last Resort

SQL Type: VARCHAR2(10) Polars Type: str

This column is not mandatory.

OLD_ROLR_OK

Old ROLR approval flag

SQL Type: VARCHAR2(1) Polars Type: pl.Boolean

This column is not mandatory.

OLD_ROLR_TEXT

Old ROLR text field

SQL Type: VARCHAR2(30) Polars Type: str

This column is not mandatory.

OLD_RP_OK

Old RP approval flag

SQL Type: VARCHAR2(1) Polars Type: pl.Boolean

This column is not mandatory.

OLD_RP_TEXT

Old RP text field

SQL Type: VARCHAR2(30) Polars Type: str

This column is not mandatory.

POST_CODE

Connection point postcode

SQL Type: VARCHAR2(4) Polars Type: str

This column is not mandatory.

PRUDENTIAL_OK

Prudential check flag

SQL Type: VARCHAR2(1) Polars Type: pl.Boolean

This column is not mandatory.

STATE

State of Australia

SQL Type: VARCHAR2(3) Polars Type: str

This column is not mandatory.

STATUS_FLAG

Active/Inactive flag

SQL Type: VARCHAR2(1) Polars Type: pl.Boolean

This column is not mandatory.

TX_NODE

Connection point TNI

SQL Type: VARCHAR2(4) Polars Type: str

This column is not mandatory.

New Data Timing

Daily

Code Examples

Polars

Casting is enums, categoricals etc is not essential, but may speed up parsing. Swapping int for pl.UInt16, pl.Int32 would also speed up parsing. However some of the datatypes are inferred, so they may be wrong.

This code deduplicates for you. Deduplication is normally only required across multiple months.

This code assumes that all columns are present, which may not be true for older files.

import polars as pl
import polars.selectors as cs

# e.g. "2029/03/15 00:05:00"
dt_s_fmt = "%Y/%m/%d %H:%M:%S"

csv_paths = ["SOMEFILE.CSV", "OTHERFILE.CSV"]

lf = (
    pl.concat(
        [
            pl.scan_csv(
                csv_path,  # must be unzipped beforehand
                skip_rows=1,  # skip the header
                infer_schema=False,  # much faster
            )
            .filter(cs.by_index(0) == "D")  # drop the footer
            .select(~cs.by_index(range(4)))  # drop metadata columns
            for csv_path in csv_paths
        ],
        how="diagonal_relaxed",
    )
    .with_columns(
        pl.col(
            "CREATE_DATE",
            "CURRENT_CHANGE_DATE",
            "EXPIRY_DATE",
            "INITIAL_CHANGE_DATE",
            "LASTCHANGED",
            "METER_READ_DATE",
        ).str.strptime(pl.Datetime, dt_s_fmt),
    )
    # Polars can't cast string straight to bool. Need to go via something else.
    .cast(
        {
            "AGGREGATE_DATA": pl.UInt8,
            "NEW_FRMP_OK": pl.UInt8,
            "NEW_LNSP_OK": pl.UInt8,
            "NEW_LR_OK": pl.UInt8,
            "NEW_MDA_OK": pl.UInt8,
            "NEW_ROLR_OK": pl.UInt8,
            "NEW_RP_OK": pl.UInt8,
            "OLD_FRMP_OK": pl.UInt8,
            "OLD_LNSP_OK": pl.UInt8,
            "OLD_LR_OK": pl.UInt8,
            "OLD_MDA_OK": pl.UInt8,
            "OLD_ROLR_OK": pl.UInt8,
            "OLD_RP_OK": pl.UInt8,
            "PRUDENTIAL_OK": pl.UInt8,
            "STATUS_FLAG": pl.UInt8,
        }
    )
    .cast(
        {
            "NMI": str,
            "AGGREGATE_DATA": pl.Boolean,
            "AVERAGE_DAILY_LOAD_KWH": int,  # or pl.Int32
            "CITY_SUBURB": str,
            "CP_DETAIL_1": str,
            "CP_DETAIL_2": str,
            "CP_NAME": str,
            "CP_NEW_SECURITY_CODE": str,
            "CP_OLD_SECURITY_CODE": str,
            "DISTRIBUTION_LOSS": pl.Float64,
            "JURISDICTION": str,
            "METERING_TYPE": pl.Categorical,
            "NEW_FINANCIAL_PARTICIPANT": str,
            "NEW_FRMP_OK": pl.Boolean,
            "NEW_FRMP_TEXT": str,
            "NEW_LNSP_OK": pl.Boolean,
            "NEW_LOCAL_NETWORK_PROVIDER": str,
            "NEW_LOCAL_RETAILER": str,
            "NEW_LR_OK": pl.Boolean,
            "NEW_LR_TEXT": str,
            "NEW_LSNP_TEXT": str,
            "NEW_MDA_OK": pl.Boolean,
            "NEW_MDA_TEXT": str,
            "NEW_METERING_DATA_AGENT": str,
            "NEW_RESPONSIBLE_PERSON": str,
            "NEW_RETAILER_OF_LAST_RESORT": str,
            "NEW_ROLR_OK": pl.Boolean,
            "NEW_ROLR_TEXT": str,
            "NEW_RP_OK": pl.Boolean,
            "NEW_RP_TEXT": str,
            "NMI_CLASS": str,
            "OLD_FINANCIAL_PARTICIPANT": str,
            "OLD_FRMP_OK": pl.Boolean,
            "OLD_FRMP_TEXT": str,
            "OLD_LNSP_OK": pl.Boolean,
            "OLD_LOCAL_NETWORK_PROVIDER": str,
            "OLD_LOCAL_RETAILER": str,
            "OLD_LR_OK": pl.Boolean,
            "OLD_LR_TEXT": str,
            "OLD_LSNP_TEXT": str,
            "OLD_MDA_OK": pl.Boolean,
            "OLD_MDA_TEXT": str,
            "OLD_METERING_DATA_AGENT": str,
            "OLD_RESPONSIBLE_PERSON": str,
            "OLD_RETAILER_OF_LAST_RESORT": str,
            "OLD_ROLR_OK": pl.Boolean,
            "OLD_ROLR_TEXT": str,
            "OLD_RP_OK": pl.Boolean,
            "OLD_RP_TEXT": str,
            "POST_CODE": str,
            "PRUDENTIAL_OK": pl.Boolean,
            "STATE": str,
            "STATUS_FLAG": pl.Boolean,
            "TX_NODE": str,
        }
    )
    # Deduplicate
    # We want one row per ['NMI']
    # Tie-breaker: greatest value of ['LASTCHANGED']
    .sort(["LASTCHANGED"], descending=False)
    .unique(subset=["NMI"], keep="last")
)

Nemosis

This table is not yet available in Nemosis.

Availability

Visibility: Private

This table is not available in the public monthly MMSDM archive. Is is only available to registered market participants over FTP inside a VPN.

Deduplication and PDR Loader Configuration

The primary keys are:

PDR Loader configuration does not mention this table, so it is unclear how to choose which row to keep when there are multiple rows for a given set of primary keys.

You should probably take the row with the maximum LASTCHANGED.

Indexes

This page as JSON (schema documented here, but may change)

Download a JSON Schema specification for this table.

Official AEMO schema documentation (multi-page):

Other Information

Package: HISTORICAL TABLES