There is no license code in my purchase receipt for an SDK product.
I purchased the PDF-XChange Viewer SDK, PDF-XChange Editor SDK, or PDF-XChange Editor Simple SDK but there was no license code in my purchase receipt.
These SDK products use a unique set of codes. These codes are provided when we have received a signed copy of the appropriate SDK License Agreement from your organization. A copy of this license agreement is included in the installer.
Fore reference, these can also be downloaded here: