get
https://partner-api.getpliant.com/api/partner/onboarding-submissions/reference-data/activity-codes
Returns a list of industry activity codes filtered by code type and optional prefix.
Use this endpoint to retrieve valid values for the code field within
businessClassification.activityCodePrimary and
businessClassification.activityCodesSecondary in an onboarding submission
payload, together with the corresponding classification scheme.
