그러한 계획은 많은 문제를 일으킬 것입니다.

English Translation

Such a plan will give rise to many problems.

Here are some guidelines for when to use “것입니다” and when not to:

Verb + 것입니다: When you want to turn a verb into a noun phrase, you can add "것입니다" after the verb stem. This is often used to talk about actions, states, or events as if they were concrete things. For example:
    먹다 (to eat) → 먹는 것입니다 (the act of eating)
    보다 (to see) → 보는 것입니다 (the act of seeing)

Adjective + 것입니다: Similarly, you can add "것입니다" after an adjective to turn it into a noun phrase. This is used to describe the quality or state expressed by the adjective. For example:
    예쁘다 (to be pretty) → 예쁜 것입니다 (the state of being pretty)
    어렵다 (to be difficult) → 어려운 것입니다 (the state of being difficult)

Noun + 것입니다: When you want to emphasize or clarify that something is a thing or an object, you can add "것입니다" after the noun. This is often used to contrast or specify the nature of something. For example:
    사람 (person) → 사람인 것입니다 (the thing that is a person)
    동물 (animal) → 동물이라는 것입니다 (the thing that is an animal)
English Translation

Such a plan will give rise to many problems.

일으키다
to cause, trigger, create, bring
to raise, kindle or stir up
to rouse

English Translation

Such a plan will give rise to many problems.

“일으킬 것” can be translated as “the thing that will cause” or “the causing factor.”

Here are a few examples of other verbs in their “일으킬 것” form:

성취하다 (to achieve): 성취할 것입니다 (the thing to achieve)
발전하다 (to develop): 발전할 것입니다 (the thing to develop)
변화하다 (to change): 변화할 것입니다 (the thing to change)
이루다 (to accomplish): 이룰 것입니다 (the thing to accomplish)
개선하다 (to improve): 개선할 것입니다 (the thing to improve)
English Translation

Such a plan will give rise to many problems.

The above explanation does not help.
일으킬 것입니다 is simply the future tense of 일으키다.