Use this operation to update any of the writable fields of an existing item object. The request body must include all writable fields of the existing object as returned in a read response. Writable fields omitted from the request body are set to NULL. The ID of the object to update is specified in the request body.Add the query parameter, include=donotupdateaccountontxns&minorversion=5, to the endpoint to supress updating the income or expense account on any existing transactions associated with this Item object. Updates on soft closed transacitons will fail.
Quickbooks

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