A fix is available
Closed as program error.
When using a Distance-Weight carrier the optimizer sometimes gives suboptimal solutions where a tour is longer than when using a Fixed Carrier. In some cases, this is normal as Distance-Weight Carriers can only make single tours (a sequence of Loads followed by a sequence of Unloads). Whereas, a Fixed Carrier can make multi-tours (i.e., alternate Loads and Unloads as desired). However, when there is an optimal solution with a single tour the Distance-Weight carrier should get the same solution as with the Fixed Carrier.
To workaround this issue a dummy shipment (with very little weight and units value, but not Zero) can be added. It must have a source which is the start of the expected tour and a destination that is the end of the expected tour. Previously, only the pickup location/delivery location pairs per shipment were generated. A change will be made to the TA-TPO mapper so that all the combinations of pickup site/delivery site pairs are generated. Note that zones are still used in order to avoid combinatorial explosion.
This issue has been fixed in IBM ILOG Transportation Analyst 184.108.40.206.
The fixpack is available on FixCentral.
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APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
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