1. A method for a check request operation, the method comprises: generating a payload section of a dispersed storage network (DSN) frame regarding the check request operation by: generating one or more slice name fields of the payload section to include one or more slice names corresponding to one or more encoded data slices; and generating a transaction number field of the payload section to include a transaction number corresponding to the check request operation; and generating a protocol header of the DSN frame by: generating a payload length field of the protocol header to include a payload length that represents a length of the payload section; and generating remaining fields of the protocol header.