It seems to have been put there to fill the need to attribute a certain sum to marketing. Make sure you are researching each point of your budget, make sure that you are giving it context and it makes proper sense within your overall plan.
Experts say that a strong business plan is one sure step in the direction of success. So, what is a business plan in the first place? It is defined as a document that outlines the functional and financial objectives of a business. It also contains details of the budget involved and the goals to be achieved.
Describe the manufacturing or operating process and associated costs. Contain believable finical projections, with key data explained and documented.
It could be, for example, the risk of a change in the economic environment - what are your contingency plans for that in terms of dealing with such a situation? There may be many other risks as well specific to your particular sphere of operation, but that ability to plan ahead for all scenarios makes for a robust business plan.