> For the complete documentation index, see [llms.txt](https://docs.truecaller.com/truecaller-for-business/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.truecaller.com/truecaller-for-business/verified-campaigns/faqs/what-is-the-format-of-the-phone-number-field-to-be-used-in-the-payload.md).

# What is the format of the Phone number field to be used in the payload?

The phone number must be provided as a **12-digit string**, which includes the **2-digit country code** followed by the **10-digit mobile number** (e.g., *91XXXXXXXXXX* for India). 

This phone number value can also be then be **SHA-256 hashed** (in lowercase hex format) before being shared in the payload.

**Example:**

* Raw phone number: `911234567891`
* SHA-256 Hash: efc187bdaca8e73ddffb1b4615e9652bb775721335bc97f47888dfebd9058444

**Important Notes:**

* **No plus sign (+)** should be included before the country code.
* Ensure the number is exactly 12 digits *before* hashing.
* The hashed output must be passed as a string in the payload.


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