waveapps api showing invalid grant error
Hi waveapps team,
recently we are trying to create an invoice with an option to select previous products/services stored in waveapps. with being said, we would need to fetch products/services from waveapps. it working perfectly new users but for old users waveapps user it throws invalid_grant error. is this happening due to not adding proper scopes while connecting with waveapps?