According to you why is it necessary for a business analyst to get involved during the implementation of requirements?

Its not necessary to be part of implementation

BA should be called whenever it's necessary

Cadning domain knowledge and providing an analytical solution are the two major criteria of a business analyst. Hence during petual implementation of a requirement or use case a business analyst can help to resolve many business strategies related problems that may arlse during the implementation stage $$ Vone of the above