When you add a new phone number to your WhatsApp account in the Facebook Business Manager, you assign it a display name. The display name is required to activate your WhatsApp number.
Display name guidelines
All display names should have a relationship with your business and should not violate WhatsApp Commerce and Business policies. Having display names compliant with our guidelines is a requirement to send messages using the WhatsApp Business API or qualify for WhatsApp official business accounts.
Below are five principles for display names and guidance for best practices to avoid formatting errors.
Within your company, you may have separate WhatsApp business accounts for different divisions; only those divisions that are compliant with WhatsApp's Commerce Policy may have a WhatsApp business account.
A display name should represent:
A display name should not be:
An organization with a government affiliation needs the WhatsApp team's approval.
A display name must have consistent branding with external sources (e.g., a company's website or marketing). An example for a product line named "Fresh Produce Cold Pressed Juices":
A display name must have a clear relationship with your business (must be referred to the business's website or external media references). For example:
If the relationship between your company and the brand is not obvious, indicate the relationship using "by [company name]."
Do not use the name of a management agency or another third party in your company's display name.
Correct formatting, in compliance with the rules set forth below
See Formatting Guidelines below.
Check this article if you want to change your display name.