The issue with this vin is that have a wrong BU build plant assigned.
It have plant(ISG0) and is incorrect because Singapore did not have plant this is the reason why the RPO codes are not refreshing on IVH.
To fix this incident we need the build file and loaded manually into GWM (NP0)
Because the VIN is so old, no system can provide the build files, so it must be created with the correct build plant E4L0 (Opel Deutschland).
Please provide the build file for that VIN. You can use the file attached ass template.
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If you cannot provide us with the build file, please give us the name of the right person to do it.