Final answer:
To substitute for an out-of-stock XL white pocket tee, offer the closest match by considering alternative colors or the next closest size, like L in white, and ensure to communicate with the customer.
Step-by-step explanation:
If you notice that there is no more XL in white in stock for pocket tees and need to substitute with another item, the first step would be to try to find the closest match in terms of size, color, and style.
If the same style is available in a different but similar color, that might be an acceptable substitute for customers who are not too particular about the color.
If color is non-negotiable but size can be flexible, offering a size L in white might be the next best option, as long as the fit is not significantly different.
Always communicate clearly with the customer about the substitution to ensure they are satisfied with the alternative option.