Great Britain will travel to Mexico in April for a Fed Cup play-off tie that they must win to avoid relegation.
They failed to reach this year's inaugural Fed Cup Finals, losing a qualifying to Slovakia last weekend.
If they win in Mexico they will get the chance to qualify for the 2021 Finals but if they lose they will be relegated to the Europe/Africa zone.
"Mexico will present a challenge. But we'll go there with the belief that we can win," said captain Anne Keothavong.
"I know the players and fantastic backroom team will do everything they can to make sure we get another chance to qualify for the finals again next year.