What is a key component that must be included in a change order?

A crucial element of a change order is the original purchase order number. This inclusion is essential because it links the change order to the original contract and the scope of work outlined in that document. By referencing the original purchase order number, all parties involved can ensure that any alterations, modifications, or additions to the work being performed are properly tracked and documented within the context of the overall project.

The original purchase order number serves as a point of reference that can help prevent confusion or disputes regarding the changes being made. It can clarify which project parameters are being altered or added to, maintaining a clear trail of communication and accountability.

Furthermore, while options such as listing new suppliers or including an estimated completion date might be useful or relevant in certain contexts, they are not core components that define the change order itself. The designer's signature, while important for approval, is also not fundamental to the definition of what a change order must include. Thus, the reference to the original purchase order number stands out as a key requirement, ensuring clarity and cohesion in project management within the realm of residential interior design.