Originally posted by: MatteoFabr

Hi!
I'm a beginner and I would Know if I can add two data file in a run configuration?

Thanks
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Originally posted by: SystemAdmin

Hi,

An OPL run configuration can have 0, 1 or many data files.
The order in which your .dat files are in listed in the run configuration is important (some data in a .dat file may depend on other data in a different .dat file), see the following chapter in the CPLEX Studio documentation: "IDE and OPL > CPLEX Studio IDE > Getting Started with the IDE > Introduction to the CPLEX Studio IDE > Working with files in CPLEX Studio > Ordering files within a run configuration"

Hope this helps
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Originally posted by: MatteoFabr

Thank you for the answer, but I haven't yet solve my problem becauese my files define the same data two times but with different values and Cplex gives me the message: "the data has already been set".
Can I resolve my problem?
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Originally posted by: SystemAdmin

A data cannot be initialized twice. If you want to solve the same model with different data sets in a loop, then maybe you will want to have a look at the flow control section in the documentation.
Using script, you would specify the .dat file to use with the model.

Hope this helps.
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Originally posted by: GMB7_Wang_Kefeng

I meet the same problem as yours now, have you solve this problem and
can you tell me how to do to viod the error?
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Originally posted by: alaa90alaa

I face the same your problem , when i want to read multiple data file . 

The error message has  been displayed  "  data element has already been set  "

... can you tell me how you solve this problem ??

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