Final answer:
FINRA recordkeeping requirements for customer complaints include separate files, action records, and maintenance at each Office of Supervisory Jurisdiction, but not written summaries of oral complaints and follow-up action.
Step-by-step explanation:
The subject of this question is Business. The question is asking about the FINRA recordkeeping requirements for customer complaints that are needed in the business industry.
According to FINRA, the recordkeeping requirements for customer complaints include separate files for customer complaints, records of action taken to address the complaint, and maintenance of customer complaint files at each Office of Supervisory Jurisdiction. However, they do not require written summaries of all oral complaints and follow-up action taken.