iREAP POS Pro Correcting or Cancelling - Wrong Document Transaction

In iREAP POS Pro, you can't delete few document transactions, it's because of the integrity reason. But, how If you have already input a document transaction and you want to make a correction or cancel the transaction?
What you have to do is input the reversed transaction, such as, Goods Receipt the reversal is Goods Issue, Sales Transaction the reversal is Sales Return Transaction, etc.

Here's the example:

• Sales transaction corrected or Canceled by sales return transaction

  

• Checking the correction or cancellation

  

• Goods Issue Transaction is corrected / cancelled by Goods Receipt transaction

  

• Checking the correction or cancellation