I make a purchase from a supplier on an open accounts receivable account. When I identified the supplier and entered his due balance, the system showed his account as a debit and not a credit in the obligations. When I want to create a traditional entry for a specific sales or expense movement, the cash box does not appear in my account.
As you have described it, your accounting is backwards. Suppliers are not associated with accounts receivable, but with accounts payable.
What do you mean by”cash box?” There is no such thing in Manager. Use terminology from the program.