For Sprint Planning, it is important that requirements are formulated in a clear and unambiguous way. In doing so, requirements should fulfill the INVEST properties. Here, the following is true:

a) The “S” in INVEST stands for specific
b) The “T” in INVEST stands for timeboxed
c) The “I” in INVEST stands for innovation
d) The “V” in INVEST states that the use of the requirement should be clear (valuable)