Read an SDMX series without losing its dimensions

Do two values actually describe the same series?

SDMX supports statistical data and metadata exchange. An isolated value does not identify its population, unit or observation status. The producer’s structure explains the codes; a response format cannot replace that reading.

1. Find the flow and structure

   Record agency, flow identifier and structure version. An omitted version may select the latest; retain the structure actually used.

2. Break down the key

   Read dimensions in their documented order and consult code lists. Frequency, territory, unit or adjustment can change a series’ meaning.

3. Keep attributes

   Retain unit, multiplier and status at their attachment level. Do not turn missing or provisional observations into final results.

4. Freeze the extract

   Record full request, filters, period, Accept header, download time and raw file. Compare keys before numbers.

Situations and decisions

Typical situations for preparing a check. They do not describe completed assignments or actual observations.

Record to retain

• Flow, agency and version
• Structure and code lists
• Full keys and filters
• Attributes, raw file and extraction date

Official references

• ECB — SDMX metadata
• ECB — response formats
• Eurostat — SDMX 3.0 requests
• ECB — time-series keys

Related source profiles

• ECB Data Portal
• Eurostat · Data Browser
• OECD Data Explorer
• IMF Data
• Insee · Séries chronologiques

Related protocols

• Query a public API and retain a verifiable extract
• Build a usable data dictionary
• Read missing values and statistical flags
• Check a statistical series break

Checks before reaching a conclusion

• Are all dimensions retained?
• Are units and multipliers explicit?
• Are observation attributes preserved?
• Can the period filter be reproduced?

An extract linking each observation to its key, unit and status.