63028: Number of parameters provided does not match the expected number of parameters

Twilio returns this error when the number of parameters you supplied does not match the number expected for the request.

• The number of parameters you provided does not match the expected number of parameters.
• When sending a templated message with ContentSid, the values supplied in ContentVariables do not align with the template's placeholder variables.

• Count the placeholder variables in the selected content template and provide a matching set of values in ContentVariables, or adjust the template so the counts align.
• If using WhatsApp templates, ensure variables follow Content API rules such as sequential numbering without skipping integers, which helps avoid template validation and parameter alignment issues.
• Fetch and inspect the content template definition to confirm expected variables and their numbering before sending.

• Send templates created with the Content Template Builder
• Using Variables with Content Templates
• Content API public endpoints