Article summary
Normalize Indian ten-digit mobile numbers into +91 format, remove duplicate representations, submit a TXT registration job, and return the two Excel fields to a controlled CRM table.
Indian contact exports often mix ten-digit mobile values with a domestic leading zero, a 0091 access prefix and complete +91 representations. Uploading those strings as they stand counts one person several times and turns formatting defects into apparent negative results. An India WhatsApp registration check should begin by creating one reproducible international number for every record.
Job contract: upload a TXT file containing one normalized number per line. Basic WS Registration returns an Excel file with phone number and registration status. It does not return recent activity or permission to send promotional messages.
Begin with the mixed representations in the CRM
A sales export may contain 98XX XXX XXX, support may hold 098XX XXX XXX, and a store sheet may use 0091 98XX XXX XXX. Freeze the source files and add new columns for normalized phone, format decision and source. Do not overwrite the raw value, because a later reviewer must be able to reproduce every correction.
| Raw shape | Normalization decision | Ready for screening? |
|---|---|---|
| 98XX XXX XXX | Add +91 only when the field is confirmed as an Indian mobile | After provenance review |
| 098XX XXX XXX | Remove the domestic leading zero and add +91 | After review |
| 0091 98XX XXX XXX | Replace the 00 access prefix with + | Yes |
| +91 98XX XXX XXX | Remove presentation spaces | Yes |
| Short suffix after +91 | Quarantine; never invent missing digits | No |
Ten mobile digits are a syntax rule, not a carrier claim
The Telecom Regulatory Authority of India refers to a ten-digit mobile number in its consumer instructions for generating a porting code. In international storage that national mobile value is preceded by +91. TRAI’s mobile number portability guidance also explains that a subscriber can retain the number while changing access providers.
Prefix allocation therefore cannot safely populate a current-carrier field. Use +91 and length for format control, the WS task for registration status, and a separate dated source if the present provider is genuinely required.
Deduplicate only after every representation converges
Raw-string deduplication preserves four versions of the same telephone number. First remove separators, convert 00, handle a supported domestic leading zero and construct the +91 form. Then compare normalized values. Keep the customer IDs, order references and store sources that pointed to each duplicate in a relationship table.
- Archive a read-only copy of every source export.
- Create the international number in a new field.
- Record an exception reason for unknown or malformed rows.
- Merge exact normalized duplicates without discarding related business IDs.
- Export the accepted phone column as UTF-8 plain text.
Run WS Registration without uploading customer metadata
Open the AppShai WhatsApp Number Checker, choose WS Registration and upload the TXT file. Download the resulting Excel workbook when processing completes. Names, states, languages and order values stay in the internal system and are joined back by normalized phone number.
WhatsApp asks users to enter a full international number and its registration troubleshooting guidance says to remove leading zeros or exit codes. Those instructions support the same format direction, but a list-screening result is not an ownership verification performed by the subscriber.
Route the output into three governed queues
| Queue | Admission rule | Controlled next step |
|---|---|---|
| Registered | Valid normalized phone with an affirmative result | Apply relationship and communication-permission checks |
| Not registered | Valid phone with a negative result | Remove the record from the WhatsApp channel pool, not from all business records |
| Review | Invalid format, uncertain source or failed result join | Return to the CRM and original export |
An unresolved data defect should not be counted as a negative platform observation. Keeping it separate makes a later corrected run comparable with the original task.
Porting and number recycling constrain identity assumptions
Mobile portability allows a number to survive a provider change. Providers may also reassign numbers under their lifecycle rules. An affirmative status describes the current telephone identifier at the execution time; it does not prove that the same person who entered the number years ago still controls it.
Store the job date and source-list version beside the result. When identity matters, require a fresh customer confirmation or the official verification process rather than promoting a screening field into proof of ownership.
Keep multilingual customer data outside the number payload
Indian CRMs may contain English, Hindi and other local-language names or regional values. None of that text belongs in the TXT number task. Joining the Excel result to a staging table by normalized telephone number avoids character-encoding issues while retaining the customer’s preferred language internally.
If one normalized number connects to several customer IDs, investigate shared family phones, business switchboards and duplicate records. Matching identifiers create a review case; they do not automatically prove that two people are the same.
Useful decisions and unsupported shortcuts
| Proposed use | Supported? | Boundary |
|---|---|---|
| Validate the channel selected by an existing support customer | Yes | The relationship must still be valid |
| Clean duplicate or unsuitable platform routes | Yes | Preserve the underlying business record |
| Infer recent WhatsApp use | No | That requires a separate activity task |
| Broadcast to an unattributed list | No | Registration is not consent |
Preflight for an Indian +91 batch
- Represent an accepted mobile value as +91 followed by ten digits.
- Resolve 00, leading zero, spaces and hyphens consistently.
- Normalize before deduplicating.
- Put one number on each TXT line and nothing else.
- Expect phone number and registration status from the basic service.
- Archive the job date, list version and source systems.
- Apply consent and opt-out rules before any communication.
A defensible screening result is more than a count of positive rows. It connects a preserved source value to a reproducible +91 transformation, a dated platform observation and a documented customer relationship.
