RS01249: SUBOPTIMAL SOLUTION FOUND WITH DISTANCE-WEIGHT CARRIERS

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • 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.
    

Local fix

  • 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.
    

Problem summary

  • This issue has been fixed in IBM ILOG Transportation Analyst
    2.6.26.41.
    

Problem conclusion

  • The fixpack is available on FixCentral.
    

Temporary fix

Comments

APAR Information

  • APAR number

    RS01249

  • Reported component name

    TRANSP ANALYST

  • Reported component ID

    5725A0300

  • Reported release

    260

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-03-26

  • Closed date

    2013-04-16

  • Last modified date

    2013-04-16

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    TRANSP ANALYST

  • Fixed component ID

    5725A0300

Applicable component levels

  • R260 PSY

       UP

  • R250 PSN

       UP



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Document information


More support for:

IBM ILOG Transportation Analyst

Software version:

260

Reference #:

RS01249

Modified date:

2013-04-16

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