Combines HCK HLK test package, asking for symbols on upload.

I thought it was only attestation signed drivers that needed the symbols, at least that is what the documentation lead me to believe.

Is this the case, and if so, why the error on upload?

matt_sykes wrote:

I thought it was only attestation signed drivers that needed the symbols, at least that is what the documentation lead me to believe.

Neither of the submission types requires the symbols, but they are
encouraged for both.

Is this the case, and if so, why the error on upload?

What error are you seeing?  I don’t think you’ve posted that yet.