Problem
You are trying to convert a GRIB edition 1 field to edition 2 via grib_set but it fails
Solution
Let's say you have a GRIB1 file with the paramId=201 which is "Maximum temperature at 2 metres since previous post-processing". You try to convert it to edition 2
% grib_ls -p paramId,shortName mx2t.grib1 paramId shortName 201 mx2t % grib_set -s edition=2 mx2t.grib1 mx2t.grib2 ECCODES ERROR: grib_set_values[4] typeOfStatisticalProcessing (type=long) failed: Key/value not found ECCODES ERROR: grib_set_values[0] edition (type=long) failed: Key/value not found
This is because the definition of the parameter 201 contains the key "typeOfStatisticalProcessing". Check the GRIB2 representation of this parameter in the Parameter database.
This means that this parameter requires a Product Definition Template for interval-based products (not instantaneous). See here.
So we need to select the correct Product Definition Template:
% grib_set -s edition=2,productDefinitionTemplateNumber=8 mx2t.grib1 mx2t.grib2 % grib_ls -p paramId,shortName mx2t.grib2 paramId shortName 201 mx2t