WhatsApp error 132000: Template Param Count Mismatch

Code 132000 means you sent a template message with a different number of parameter values than the template defines. Every {{1}}, {{2}} placeholder in the approved template must receive exactly one value, in the right component, and nothing extra. The platform checks this before delivery, so the error is synchronous and deterministic: the same payload will fail for every recipient until the parameters line up.

The detail that catches most teams is that parameters are counted per component. A template with one variable in the header and two in the body expects a components array with a header component holding one parameter and a body component holding two. Sending three body parameters, or sending body parameters when the template has none, produces 132000 even though the total looks right. Templates whose buttons carry dynamic URL suffixes need a button component with its own parameter too.

Your token and recipient are fine, and the template is approved; the mapping between your data and its placeholders is off.

Generate template payloads from the template definition rather than by hand: cache each approved template's components and placeholder counts, and build the send from that. Subscribe to message_template_status_update so edits invalidate the cache, and validate counts locally before the API call so mismatches are caught in tests. The parameter-counting trap is covered in the WhatsApp error-code guide. The template checker validates a payload against your template's placeholder counts before the API sees it.