Issue with the land cover.tiff while using Mean radiant temperature (solweig)

[QGISUser2413]

Description of the bug
I am trying to run a "Mean radiant temperature (solweig)" simulation using UMEP (version 4.1.1) with QGIS 3.34.12 version. So I produced all the datasets. I am facing the issue with the land cover.tiff. When I tried to use to the reclassification method for the land use maps, it didn't accept and gave me error regarding the extra land use classes which is not listed in the land cover scheme of UMEP. Later I digitised the land use types based on the classification scheme, where my ROI consists of only four classes out of seven which are class 1: paved; 2: buildings; 5: grass; and 6: bare soil. But then again when I am trying to run the simulation with this, it is showing me similar error. Please help me and suggest the appropriate way to solve the issue. I am totally new to this plugin and simulations, but with good experience of working with GIS.

Desktop information:

• OS: Windows12
• QGIS Version: QGIS 3.34.12
• UMEP Version: 4.1.1

Screenshots

[biglimp]

One issue occurring is that you also have noData values in your LC-grid. Is that so?

[QGISUser2413]

@biglimp Thank you for the reply. Yes, actually, this time I tried to roughly digitise the land cover, so there were a few pixels that were mistakenly left with no data. I corrected it, and now with that it worked, though it again flashed that it may contain classes other than 1 to 7, but it worked.
With this, I have another query. When I previously tried working with the ready-to-use classification map (after reclassifying using the UMEP>pre-processor>urban land cover>land cover reclassifier tool), it was not working and gave the error that classes are not between 1 to 7. That file had no "noData" values, and I reclassified all the classes into 1 to 7 classes. Can you please help me understand why this happened?

[biglimp]

Hard to say without seeing the data. As this is not an issue per se, I will migrate this to Discussions so that other can see and learn from our communication.