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Proc HpfDiagnose and ARIMAX

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SAS Employee
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Proc HpfDiagnose and ARIMAX

I would like proc hpfdiagnosessa to delimit the usage of arima-models using the arimax statement, for instance arimax p=(3:5) q=(1:5).
With this command, p:n value becomes anyway 2 and q:n 0.
Is this something we can adjust, so that if models can't respect the requested criteria, the biggest possible values are used and the model works despite the defined criteria?

Thank you!
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