What criteria should requirements meet to be considered for work according to INVEST?

The INVEST principles requirements should be:

• Independent — the requirement should be as autonomous as possible so that it can be implemented and tested separately from others.
• Negotiable — requirements should not be too rigidly fixed, leaving room for discussion and clarification.
• Valuable — each requirement should bring value to the end user or business.
• Estimable — requirements should be sufficiently clear and specific to estimate the effort needed for their implementation.
• Small — requirements should be small enough to be implemented within a short period (e.g., within one sprint).
• Testable — it should be clear how to verify that the requirement has been correctly fulfilled.

Only requirements that meet these criteria should be taken on to ensure effective planning, implementation, and quality control.