Users are trying to create Opportunities and are receiving errors when populating a custom picklist field. When user select either of the two values in the picklist, they receive different error messages above the field and are not able to save the Opportunities. What is the likely cause of the error

Janis owns and operates a store in a country experiencing a high rate of inflation. in order to prevent the value of money in her cash register from falling too quickly, janis sends an employee to the bank four times per day to make deposits in a interest-bearing account that protects the store's revenues from the effects of inflation. this is an example of the (menu costs/ unit of account costs/ shoesleather costs) of inflation. pick one