Article summary
When Algerian activity output has excessive blanks or duplicates, inspect the domestic leading zero, +213 conversion, repeated country codes and spreadsheet damage before rerunning WS Activity.
When an Algerian list suddenly produces excessive unmatched rows, duplicates or missing activity observations, do not begin with a theory about local users. The cause is often a domestic leading zero retained after +213, producing +213 0…, or an access prefix and country code concatenated twice. An Algeria WhatsApp activity investigation should start with telephone syntax.
Triage order: verify the ten-digit domestic to +213 international conversion, inspect duplicates and spreadsheet corruption, and only then interpret activity time.
Convert the domestic zero deliberately
Algeria’s Regulatory Authority for Post and Electronic Communications explains that the national plan adopted in 2008 uses a ten-digit domestic format for mobile and several other services. In international E.164 form, the national prefix zero is removed and country code +213 is added. The ARPCE numbering page provides the current structure and allocations.
A domestic 06XX… therefore becomes +213 6XX…, not +213 06XX…. Nine national significant digits remain after +213. Fixed and mobile types still need separate classification rather than being combined solely because total length appears plausible.
Recognize the five failure signatures
| Observed defect | Likely cause | Repair |
|---|---|---|
| +213 0XXXXXXXXX | The domestic trunk zero survived | Remove it after confirming Algerian provenance |
| 00213 0XXXXXXXXX | Both access prefix and trunk zero remain | Convert 00 to + and remove the national zero |
| +213 213 XXXXXXXXX | Country code was appended twice | Retain one +213 |
| 213XXXXXXXXX | The plus sign or column definition is missing | Add + only after confirming a phone field |
| 2.136E+11 | Spreadsheet stored the identifier as a number | Re-export the source as text |
Measure the defect before authorizing a rerun
Sample the TXT and count rows containing +213 0, repeated country codes, non-phone characters, invalid international length and duplicates after normalization. When one source accounts for nearly all defects, repair that source separately. When every source shows the same error, the shared transformation rule is responsible.
| Pattern | Diagnosis | Response |
|---|---|---|
| Exceptions originate in one branch export | Local mapping defect | Re-export and rerun that cohort |
| All sources keep zero after +213 | Global conversion defect | Correct the rule and rebuild the batch |
| Last digits changed in Excel | Identifier precision was lost | Return to the source; formatting cannot restore digits |
| Format passes but activity is unavailable | Not necessarily a syntax failure | Preserve unknown and inspect visibility limits |
Build a repair ledger that can be reversed
Keep the raw phone, repaired phone, applied rule, source file and review state. Every automated change should answer which zero was removed and why. A number with no documented Algerian source should not receive +213 merely because it starts with zero.
Deduplicate after the repair. Maintain the relationship between a shared technical number and all associated customer IDs; identical phones do not by themselves justify merging master records.
Rerun WS Activity as a new observation
Select WS Activity on the AppShai WhatsApp Number Checker and save the repaired phone column as TXT with one value per line. The Excel result contains phone number, activity time, activity days and WhatsApp mapped phone number. Append a new task rather than overwriting the defective run.
- Label the original task as affected by a format-rule error.
- Regenerate +213 values from preserved source data.
- Deduplicate and produce a new TXT file.
- Execute the job with a new date.
- Compare matched rows, unknown observations and mapping exceptions.
Perfect formatting will not eliminate every blank
WhatsApp explains that last-seen and online visibility can be affected by privacy settings, contact relationships, blocking and temporary connection issues. Review the platform’s official visibility guidance. A valid +213 number can still produce an unavailable activity observation.
Segment explicit times under a business-defined window and retain unavailable values as unknown. Measure genuine engagement through the organisation’s replies, support events and orders rather than inventing it from a blank platform field.
Compare the repaired task with the defective one
| Measure | Expected movement | Warning sign |
|---|---|---|
| Unique normalized phones | May fall as duplicate forms converge | An implausibly large collapse |
| Successfully joined output | Should improve after syntax repair | Most values remain unmatched |
| Unknown activity | May decline but need not reach zero | Every row suddenly carries the same observation |
| Differing mapped phones | Moves to review | Automatic overwriting or identity merging |
Stop the next batch from repeating the defect
- Store a domestic display value and an international normalized value separately.
- Document that Algerian international conversion removes the national zero.
- Keep phone columns as text.
- Calculate a format-pass rate for every source.
- Inspect length and repeated country codes before upload.
- Retain failed jobs for audit rather than overwriting them.
- Keep unavailable activity observations unknown.
When activity output looks suspicious, repairing the number evidence chain is usually more productive than changing the recency threshold. Only after +213 conversion, text precision and deduplication pass should the timestamps enter business analysis.
