Meaning of "to achieve the setup of a disaster recovery plan" (business language)

The AHD (https://www.ahdictionary.com/word/search.html?q=achieve) offers as its second definition of achieve:

To succeed in accomplishing; bring about: achieve a task; achieve an improvement in foreign relations. See Synonyms at perform.

In your quotation, what is being achieved is only the setting up of a plan for disaster recovery. This seems to be confirmed by the requirements to assess the damage when a disaster occurs and document the procedures to respond to a disaster.

That would be my reading, although there’s a chance your option could be what was intended.

You have the unenviable task of translating pretentious and bloated business prose.

Managers shall ensure that procedures within their area of responsibility are carried out correctly to achieve the setup of a disaster recovery plan

Ensuring proper procedure within an area of responsibility is part of the function of a manager so hardly needs to be said.

To achieve the setup is no different from setting up.

Hence the sentence says little more than:

Managers must set up a disaster recovery plan

The following sentences - which you do not ask about - show the same self-important and ploddingly procedural approach that stultifies the adaptability and flexibility that would actually be needed if disaster struck.