Shape, check digit, accepted and refused examples and the API call for UEN in Singapore. Every example on this page is run through the same validators as the free identifier validator, so a value shown as accepted is a value the validator accepts.
| Field | Value |
|---|---|
| Register | ACRA |
| Shape | N{9} C | L N{2} L{2} N{4} C |
| Check digit | Enforced. Local company: weights 10,8,6,4,9,7,5,3,1 over the 9 digits, sum mod 11 picks the check letter from Z K C M D N E R G W H. LLPs and foreign branches (T, S or R, year, two letters, serial) use weights 4,3,5,3,10,2,2,5,7 and the letters A B C D E F G H J K L. |
| Worked example (accepted) | 196800306E |
| Normalised form | 196800306E |
| Also accepted as input | T08LL1267L |
| A one-character slip | 196800306F is refused |
| Regex (normalised form) | ^([0-9]{9}|[TSR][0-9]{2}[A-Z]{2}[0-9]{4})[A-Z]$ |
| API call | GET /companies/search?country=SG&company_number=196800306E |
| VAT number | The register data holds no VAT number for this identifier. |
An 8-digit business UEN (sole proprietorship, partnership) is refused. Local companies, LLPs and registered foreign company branches only.
curl "https://api.prometiam.com/functions/v1/risk-api/companies/search?country=SG&company_number=196800306E" \ -H "Authorization: Bearer YOUR_API_KEY"
Shape notation: N digit · L letter · X digit or letter · C check digit or character · {n} repeat n times.
A valid shape and check digit prove that a number is well-formed, not that a company holds it. Only a lookup in the register answers that.
Register data that the API serves for Singapore carries this credit:
Contains information from ACRA Information on Corporate Entities and Entities Registered with ACRA from the Accounting and Corporate Regulatory Authority (ACRA) via data.gov.sg, which is made available under the terms of the Singapore Open Data Licence version 1.0 (https://data.gov.sg/open-data-licence). Adapted by Prometiam; not an official ACRA extract.
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