I added a new field in standard Vendor v2 entity but after successful build and synch it suddenly started giving DB issue when code deployed to anther dev instance.
When investigate, found strange issue,
The extension entity icon got changed,
Even the property window for this entity showing below error like incorrect meta data.
To fix this, I opened the XML file for this entity extension from my model folder and found some strange code there, still not sure how then ended up there . So hat I did is open other entity extension from metadata and compared both and removed any extra values in file.
Refresh you model in VS and try to build and synch again
