Meta Tech ProviderWhatsApp error 138015: Calling needs a 2,000-person messaging limit
Your WhatsApp Business account. What it means, how to fix it, and whether to retry.
WhatsApp error 138015 means calling can't be switched on for this number because its daily messaging limit is below 2,000 people. Meta raises the limit as the business sends messages people engage with, and once its display name is approved.
Why it happens
- The business's daily messaging limit is 250 or 1,000 — every new business starts there.
How to fix error 138015
- Keep sending messages people engage with; Meta raises the limit automatically.
- Get the display name approved, which also lifts the limit.
Should you retry?
Once the messaging limit reaches 2,000.
How to prevent it
- Message people who agreed to hear from you — reports and blocks hold the limit down.
Common questions
Why can't I turn on WhatsApp calling?
WhatsApp calling needs a daily messaging limit of at least 2,000 people. New businesses start lower and Meta raises the limit over time.
How ThinnestAI shows it
On ThinnestAI every message WhatsApp doesn't deliver shows WhatsApp's own message first — word for word, with its code — and what it means underneath, on the broadcast and in the inbox. Undelivered messages aren't charged. See the WhatsApp Business API.