For some unknown reason the generated PDF file name has non-lithuanian characters. It is "Faktûra 20230463.pdf", while it should be "Faktūra 20230463.pdf" (the different "ū" character).
I remember we had the same problem when tried to modify CreateMailFromIVD() with HAL for another client. Solution was to not use national characters in the file name. There were no problems then until we used hal. But in this case there is no hal.