In this post, you’ll learn more about the Error Code 1199that is returned when working with the Erply API
Erply API Error Code
1199
Error Description
Sales Promotion – “onlyForDiscountedItems” flag is set to true on this promotion. This can only be set on a promotion that follows the “% or $ off specific items”, the “% off everything”, or the “$ off the purchase” rule formulas. Disable the flag or adjust the rule.