E15070 — WhatsAppTemplateSlugImmutable

The template slug cannot be changed after its first submission.

• HTTP status: 409
• Type: conflict_error
• Name: WhatsAppTemplateSlugImmutable

What to do

Read the template to get its WhatsApp Business Account, then make a copy on that account with a new name and slug before submitting it.

Operations that resolve this:

• Get a message template
• Duplicate a message template

Related

• Idempotency: safe retries and key reuse rules
• E15xxx — WhatsApp sending & delivery: every code in this range
• Errors: the full wire contract, status mapping, and error catalog
• Error handling: branching on type and code, validation details, and vendor_code