QuickBooks Error Code 1402 occurs while working, installing, or opening QuickBooks Desktop with the company file. This error is also seen when using corrupted QuickBooks payroll accounting software on Windows or Apple Mac OS X systems.

Some vitamins and minerals require specific transport proteins or carriers to facilitate their absorption. For example, iron is transported across the intestinal membrane by a protein called transferrin, while vegan supplements  vitamin B12 requires intrinsic factor for absorption in the small intestine.