If you are acting for both sides of the deal, you can create your Sale record using the information from your Purchase record (or vice versa).  To import data from one file to another a file type, please follow the steps below:

• Log in as any user
• Click on the 'New' button
• Click on the record type (example: 'Sale')
• In the newly opened Sale file, click on the 'Records' menu in the upper left and corner
• Click on 'Import' and select 'Import a purchase record'
• Click on the prompts to import the record. Once imported please enter the Sale file record number and save the record
• The purchase file will now be successfully imported to the sale record.

If for some reason, you have created the wrong type of record and you have imported your information into the correct record type, you can delete the incorrect record by following the steps found here.