This variable indicates the current size of the position sequence (i.e., number of TCM function and/or GCC12 access that have been created in the ODUk interface). When the value of this variable is greater than zero, it means that one or more TCM function and/or GCC12 access have been created in the ODUk interface. In this case, there will be as many rows in the optIfODUkPositionSeqTable as the value of optIfODUkPositionSeqCurrentSize corresponding to this ODUk interface, one row for each TCM function or GCC12 access. The position of the TCM function and/or GCC12 access within the sequence is indicated by the optIfODUkPositionSeqPosition variable in optIfODUkPositionSeqTable. The optIfODUkPositionSeqTable also provides pointers to the corresponding TCM function (optIfODUkT) and GCC12 access (optIfGCC12) entities.