Pattern · India 🇮🇳

Regex for UAM (Udyog Aadhaar Memorandum)

Older 12-character MSME ID — superseded by Udyam.

The UAM (Udyog Aadhaar Memorandum) regex is ^[A-Z]{2}\d{2}[A-Z]\d{7}$ — copy it below, or open it in the explainer for a token-by-token breakdown.

The pattern

^[A-Z]{2}\d{2}[A-Z]\d{7}$

Try in explainer → Download cheat sheet ↓

What it matches

MH01A1234567
DL10B9876543

What it doesn't match

MH01A123
mh01a1234567

Notes & gotchas

UAM was the previous MSME registration number issued from Sept 2015 to June 2020. Format: 2-letter state code + 2-digit district + 1 letter + 7 digits. Migration to Udyam Registration is mandatory; old UAMs are no longer valid after 31 March 2022.

Code in your language

Use the explainer's Code tab to generate ready-to-paste snippets in JavaScript, Python, Java, .NET, Go, Ruby, and PHP for this pattern.

Open in explainer →

Token-by-token breakdown

Every part of the pattern, left to right:

Token	Meaning
`^`	start of string (or line in multiline mode)
`[A-Z]{2}`	exactly 2 times: any of: uppercase letters
`\d{2}`	exactly 2 times: digit (0–9)
`[A-Z]`	any of: uppercase letters
`\d{7}`	exactly 7 times: digit (0–9)
`$`	end of string (or line in multiline mode)

About this pattern

India-specific identifiers are governed by various authorities (UIDAI for Aadhaar, Income Tax Dept for PAN, RBI for IFSC, GSTN for GSTIN, etc.). Regex confirms format; for definitive validation, integrate with the issuing authority's verification API.

Quick usage in different languages

This exact pattern — with the correct escaping and idioms for each language:

JavaScript: /^[A-Z]{2}\d{2}[A-Z]\d{7}$/.test(value)
Python: re.match(r"^[A-Z]{2}\d{2}[A-Z]\d{7}$", value)
Java: Pattern.compile("^[A-Z]{2}\\d{2}[A-Z]\\d{7}$").matcher(value).matches()
C# / .NET: Regex.IsMatch(value, @"^[A-Z]{2}\d{2}[A-Z]\d{7}$")
Go: regexp.MustCompile(`^[A-Z]{2}\d{2}[A-Z]\d{7}$`).MatchString(value)
Ruby: /^[A-Z]{2}\d{2}[A-Z]\d{7}$/.match?(value)
PHP: preg_match('~^[A-Z]{2}\d{2}[A-Z]\d{7}$~', $value)

The explainer’s Code tab regenerates these for any pattern you paste, and the downloadable cheat sheet bundles the breakdown, all seven snippets, and the pitfalls below onto one printable page.

Common pitfalls

Anchored to the whole string. This pattern uses ^ and $, so it requires the entire input to match. To find it inside a longer text, drop the anchors and use the global (g) flag.
Uppercase only. Ranges like [A-Z] won't match lowercase. Add a-z (or the i flag) if lowercase input should be accepted.
Escape it correctly per language. In Java and JavaScript strings each backslash must be doubled (\\d); in Python, Go, and C# use raw/verbatim strings so the backslashes survive.
Validate beyond format. Matching the format doesn't guarantee the value is real. Confirm the uam (udyog aadhaar memorandum) against a source of truth (database, API, or checksum) where it matters.

Standards & sources

This pattern is based on the following authoritative specification(s) and issuing authorities. Formats can change — always confirm against the primary source.

Ministry of MSME — Udyam Registration

Related patterns

More patterns in the India 🇮🇳 category: