Sitecore expects an integer value to identify the channel id, which is used to identify the online store to retrieve from the channel database.

The problem I faced was that the neither the Microsoft Ax Partner or the customer could give me the id, all they could find was the name which was a string value!

But fear not the following SQL statement which you can run against the channel database will show you all the channels and their assoicated id 🙂

SELECT TOP 1000 [NAME]
      ,[CHANNELID]
      ,[OPERATINGUNITNUMBER]
      ,[SERVER]
      ,[DATABASE]
      ,[ISPUBLISHED]
      ,[ISLOCAL]
      ,[CONNECTIONSTRING]
  FROM [AsyncClientDB].[crt].[STORAGELOOKUPVIEW]

Also ensure that channel is in fact published otherwise Sitecore can not use it, hope this helps Alan