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WhatsApp Cloud API error message for specific numbers

Hi, When I using WhatsApp cloud API to sent messages, it is giving me the following error , but strangely only on specific numbers only

The response received from the WhatsApp Cloud API app is shown below:
Error Message(#100) Invalid parameter
Error TypeOAuthException
Error Code100
Error Error Data Messaging Productwhatsapp
Error Error Data DetailsParameter Invalid
Error Error Subcode2494010
Error Fbtrace IdARy9DzDcteff6QQvsRgbbhN

I checked the input parameters and they are getting parsed correctly. ( have changed he number below intentionally, but real one is a valid number)

Api Endpoint Url
Whatsapp Account Id101210032XXXXX
Phone No Id109359441XXXXX
Template Nameabp_datadriven_dmktgcompany
Template Id50833721117XXXX

Since the problem happens only on specific numbers, I am not sure what is the reason ? Anyone else faced this and has a solution ? - thanks , kabir


Well-known member
Staff member
Hey @kabirkhanna

As we can see from your error log, it seems like you are not passing the country code along with the users' phone number as mentioned in the help text.

Kindly try again by passing the phone number and let us know how it works for you.