Which custom question can I ask in my Leadform?

As part of Facebook's Advertising Policies, we recommend you to pay close attention to the custom questions you would like to create. Below you find the topics Facebook will not allow and our recommendations for custom questions.

Account numbers such as: frequent flyer numbers or tv/telephone provider account numbers.
Criminal or arrest history
Financial information such as: credit or debit card numbers, bank account numbers, routing numbers, credit score, net worth, income, bankruptcy status and debt status
Government-issued identifiers such as: social security numbers, drivers licence numbers, photo identification numbers, passport numbers and military ID numbers
Health information such as: current or previous physical or mental conditions either directly or within the family, medical treatments or side effects experienced from medication, or information about medical conditions or disabilities
Insurance information such as: insurance company name, plan details, usage or policy numbers
Race or ethnicity
Religious or philosophical beliefs
Sexual orientation or information about the sexual life of the individual, including sexual history, whether the individual has engaged in group or same-sex activity, or which gender(s) the individual prefers to date
The same or substantially similar information to the questions available in the prefilled questions field. So do not ask for the same information again.
Trade union membership status, including whether the individual is a union member or to which union they belong
Login information to any service, including usernames or passwords to new or existing accounts
The date of birth for a child

Tip! Stay away from any questions where you are asking for a number as response

The available prefilled questions as mentioned above are: