Error validating verification code
If such artifact is incomplete or wrong, the developers will not be able to build the product the stakeholders want.This is a form of "artifact or specification validation".Requirements should be validated before the software product as a whole is ready (the waterfall development process requires them to be perfectly defined before design starts; but, iterative development processes do not require this to be so and allow their continual improvement).
In other words, software verification ensures that the output of each phase of the software development process effectively carry out what its corresponding input artifact specifies (requirement - software product), while software validation ensures that the software product meets the needs of all the stakeholders (therefore, the requirement specification was correctly and accurately expressed in the first place).
Every time the output of a process correctly implements its input specification, the software product is one step closer to final verification.
If the output of a process is incorrect, the developers are not building the product the stakeholders want correctly.
There are two ways to perform software validation: internal and external.
During internal software validation, it is assumed that the goals of the stakeholders were correctly understood and that they were expressed in the requirement artifacts precisely and comprehensively.It is normally the responsibility of software testers as part of the software development lifecycle.