I need to correct an entry made between accounts receivable and Sales.

A journal entry would not be the best avenue for receiving a payment against A/R on a Sales Receipt. Since A/R on any entry requires a name then Receive Payment for that name and it will clear it off.  Normally a Sales Receipt is considered to be paid at time of issue and should not include A/R. To properly affect A/R with  a sale use a Customer Invoice instead.

If you insist on using a journal entry then you would Credit A/R for the customer name and Debit the bank account the payment goes to.