90019: 'TemplateArgs' dictionary size is too large

This error occurs when your request includes more template arguments in TemplateArgs than Twilio accepts for a template message. Send only the key-value pairs required to populate the placeholders defined in your template.

• TemplateArgs contains too many entries.
• Your request includes placeholder keys that are not required by the template you are sending.
• Your application is passing a large personalization object into TemplateArgs instead of only the variables used by the template.
• The template design requires more dynamic fields than Twilio supports in a single template payload.

• Remove unused entries from TemplateArgs and resend the request.
• Send only the placeholder keys that are defined in the template body.
• Keep the template variable payload within the supported limit. Content templates support up to 100 variables.
• Move static text into the template itself and reserve TemplateArgs for runtime substitution values only.
• If you need more placeholders than a single template supports, simplify the template or split the content into multiple messages or templates.
• Review each variable definition before resending. Variable keys cannot contain spaces, keys can be up to 16 characters, and values can be up to 1,600 characters.

• Using Variables with Content Templates
• Send templates created with the Content Template Builder
• Messages resource