Provided herein are compositions and methods for the multiplex analysis andor detection of polynucleotides having one or more distinguishable target sequences. Indexes starting at 1 are correlated to different ZC sequences and are allocated for cells so that the indexes are continuous. The CSPG responds to the message by providing an accounting command for the selected PDP link such that synchronization is achieved between accounting information and a state associated with the selected PDP link.