Hello.
I have a code which automatically download and then preprocess Sentinel-1 products. It have been working without issues in any AOI that entered recently, but then in a new AOI in Norway I encountered troubles since in the list of available products for a specific periods suddenly the product SENTINEL-1 CARD-BS appeared in the list of available products, even if the product type was setted to GRD - COG.
What is this product and why is available only for apparently random aerea and periods?