I've noticed this page which has information about the posting sequence:
technet.microsoft.com/.../aa551302.aspx
It seems that there is only a setup for some account types. For example, I can set the Sales search order to be either from Item or Customer (from the Ledger and sales tax section in Accounts receivable parameters. However, for Purchase expense there is no option (looking in the Accounts payable parameters) so the search order is always from the Item first.
Do I understand this correctly, and is there a reason it was implemented this way? Even from an accounting standpoint, I can't see any pattern to why certain types are configurable and certain types are not.
Thank you.
*This post is locked for comments