Domain catalogue Reference data

Currencies and exchange rates

Currency codes, decimals and the exchange-rate series every system converts with, kept once with a version for each rate date.

SOURCES, READ IN PLACESAP S/4HANAERPOracle Fusion CloudERPWorkdayHCM · financeSnowflakelakehouseASSEMBLED1 · standardise2 · match on the domain keys3 · survive field by field4 · place in the hierarchies5 · run the column and row rules6 · publish the golden viewGOLDEN CURRENCIES AND EXCHANGE RATESCurrencies and exchange ratesone id · every source key keptREAD BYGrids, pivots and drill-downswith the transactionsAPIs, SQL and agentsone policyWrite-back to the systemsacknowledged
Where the currencies and exchange rates record comes from, how it is assembled, and who reads it. Other systems have their own page.
1 days
of configuration to a production-grade version
estimate
4
attribute groups in the golden record
catalogue
2
match keys
catalogue
1
hierarchies the record sits in
catalogue
2
kinds of transactions that refer to it
catalogue
What it is

Today, and with the golden record

Today the treasury rate, the ERP rate and the planning rate for the same day differ; the variance analysis spends its first hour explaining currency.

With Lima the currencies are read where they live, matched on ISO code and from + to + type + date, assembled field by field and published as one golden record per real currencies, with every source key underneath. The postings converted with a rate and the rate history for a pair are one click away, because the transactions sit in the same bed.

The golden record

4 attribute groups, and which source usually wins each

Survivorship is per field; the winning source below is the usual one, and a steward's verified edit outranks it.

CurrencyISO code, name, decimals, active dates
wins: reference owner
Rate typesspot, month-end, budget, average, with their source
wins: treasury
Ratesfrom, to, type, date, rate, source, loaded at
wins: treasury feed, versioned
Mappingsrate type codes per system
wins: crosswalk
How records match

The keys, in order

ISO codefrom + to + type + date

Rates are time series in the bed, so a pivot in group currency uses the rate of each row's date, or the budget rate, by choice.

Pairs above the merge line merge; pairs between the lines go to the steward with the two records side by side and the transactions of each; the rest stay apart. Every merge can be undone. The golden records page explains the steps.

Where it sits

1 hierarchies

Several structures for the same record, each kept as versions with dates.

HierarchyLevels and use
Typerate type → currency pairs

A pivot can roll the record's measures up any of them; a draft version is validated against the facts before it goes live. See hierarchies.

Rules at three levels

Sample rules from the template

Written in one language, tested on live rows before they are saved.

LevelRules
Columnrate is positive
decimals match the ISO standard
Rowa rate names its source and time
an inverse rate agrees with the direct rate within tolerance
Businessevery business day has a spot rate for every active pair
budget rates are frozen after the plan is approved
What refers to it

Transactions, measures and drill-downs

Transactions in the bedRead from
Postings in foreign currencyGL
Revaluationsperiod end
rates loaded per daymissing rate daysrevaluation impact

Measures above are available in the pivot on any hierarchy level, by month or week, with calculated measures beside them. Drill-down opens the postings converted with a rate and the rate history for a pair.

Security pattern

What is masked, who edits, who reads

Default policy for the domain

Treasury edits; everyone reads; budget rates locked by finance. The twelve layers apply on every door; see security.

The lookup API

Pass the keys you know, get the golden record

request
POST /api/v1/golden/fx/rate
{
  "from": "USD",
  "to": "EUR",
  "type": "month-end",
  "date": "2026-09-30"
}
response
200 OK
{
  "rate": 0.9214,
  "source": "ECB",
  "loaded_at": "2026-09-30T16:05Z"
}

The same call creates the record when nothing matches; related facts are expanded through the cross-reference; page sizes and limits are published per endpoint. See the headless API.

On your systems

One page per system

The objects with their real names, the keys in that system's fields, the write interface and what to set up first.

A day with it

Illustrative

Names, places and figures are illustrative or anonymised; the pattern is the catalogue's.

A group with entities in 19 currencies loads one rate series and publishes it to two ERPs, HR and the planning tool. Reports in group currency agree with the ledgers to the cent.

illustrative scenario · Currencies and exchange rates
Terms on this page

Rate typeThe purpose of a rate: spot, month-end, budget, average.
Inverse rateThe rate in the opposite direction; the rule keeps them consistent.
RevaluationRestating foreign-currency balances at a period-end rate.
Golden recordThe one record for a real currencies, assembled from the source records, with every value carrying its source, rule and time.
Cross-referenceThe list of source keys that belong to one golden record.
Questions

Does this domain copy data out of the systems?

The golden record is a governed view over rows read in place; a governed replica in your lake is used only where a source is too slow or too limited to query live, and the column says so.

How long to the first golden view?

One working day for the first two sources; 1 working days to a production-grade version with rules, hierarchies, security and write-back tested.

Which industries use it most?

Financial services, Industrial manufacturing, Consumer goods, High-tech and semiconductor. The industry pages show the domains each starts with.

See your first domain built on your data

Bring two systems that hold the same customers, suppliers or materials. In one working day we connect them, run the match on live rows, review the queue with your steward and publish the first golden view with its API.