The rate codes are the wrong Sell or Net rate type. Check whether your rate codes should have an A at the end of the number or not.
'''Sell Rates are expected for Agency or Flex rate plans, when hotel level rate acquisition is Sell Rate''' The rate codes are the wrong Sell or Net rate type. Check whether your rate codes should have an A at the end of the number or not. '''Sell Rates are not expected for Merchant rate plan or Net Rate hotels.'''
Your rates codes need to have an A at the end. Please check your channel manger settings and your rate codes in all rates and daily prices. Make sure you only use the codes which are available when you click on "Get Codes".