Hi pschimek,
Thanks for your post, and welcome to the MYOB Community Forum.
To attach a receipt to an existing spend money transaction, kindly go to Banking > Find transactions and then click the reference number of the transaction. Once done, scroll down to view the 'Attachments' that allow you to browse the file you want to attach. Lastly, click Record. More information regarding your concern can be found in the Help Article: Attaching documents to spend money transactions.
Feel free to post again anytime if you require further assistance.
If my response has answered your inquiry, please click "Accept as Solution" to assist other users in finding this information.
Best regards,
Doreen
