Function to get the default unit of an article.
Function to get the full name of the main image of an article.
Function to ask MSS to get the Price and Discounts of an article.
Function to get the totals for an article given a certain quantity, price and discounts.
Function to ask MSS to open the article record screen.
Function to ask MSS to open the article selection screen.
Function to validate if inputted price and discount are valid using MSS rules.