lead update via API

[Jayant_Singh]

Our team want to update bulk lead via custom API. what will be correct JSON to update lead based on dedupe field as email address.

[SanfordWhiteman]

Do you actually want a bulk update? As in a single posted file processed at once? B/c that doesn't use JSON, rather CSV.

[Jayant_Singh]

Using JSON, it allows 300 records to update but looking for bulk update using CSV. 

[SanfordWhiteman · Accepted solution]

Then you want https://developers.marketo.com/rest-api/bulk-import/bulk-lead-import/.