Glamorgan and Somerset had been pressured to take a seat and watch the rain because the scheduled date for the One-Day Cup remaining was washed out, with no play at Trent Bridge.
A reserve day has been allotted for Monday, 23 September, however the forecast stays poor with extra heavy rain more likely to have an effect on the Midlands.
If the groups can not play a minimum of a 20-over match, the trophy is because of be shared between the golf equipment.
Umpires David Millns and Rob White made the inevitable name at 14:30 BST because the rain intensified and swimming pools of water shaped on the outfield, with supporters from each counties left annoyed within the stands.
The 2 sides are each hoping that the 50-over competitors would make up for latest disappointments, with Somerset overwhelmed within the T20 Blast remaining by native rivals Gloucestershire, and Surrey clinching the County Championship.
Glamorgan have slumped to seventh in Division Two of the Championship, rising the emphasis on repeating their trophy win of 2021 within the 50 overs format.
An entire abandonment of the match would add to the controversy amongst county supporters over the scheduling of the ultimate in late September, with the same date already inked in for 2025.