Business license
A business license was a permit issued by a government entity that would authorize an individual or company to legally operate a business within a specific jurisdiction.
Once signed, any Ferengi who broke a contract with another Ferengi lost their business license from the Ferengi Commerce Authority, also known as the FCA. Their assets were then liquidated and they were forbidden from doing business with other Ferengi. However, the authority of the FCA did not reach beyond the limits of the Ferengi Alliance, and someone who had suffered this punishment could do business however they pleased in non-Ferengi parts of the galaxy. (DS9: "Body Parts")