I have two S1 GRD products:
S1B_S3_GRDH_1SDV_20180924T173034_20180924T173045_012860_017BEB_CA29
S1B_S3_GRDH_1SDV_20180924T173006_20180924T173034_012860_017BEB_98E0
They are single swath. SNAP throws an exception with the Slice Assembly operator.
The error returned is:
Error: [NodeId SliceAssembly] 0
SNAP v6.0.10 with all updates