Dataset accessed using different modes

Dataset datapoolname is accessed using different dataset modes by different tests.

Two tests are accessing the same dataset. These two tests use different access methods for the dataset.
None.

Examine your tests to find the dataset mentioned. Check the access mode for the dataset by double-clicking the dataset name in the test. The access mode will be Random, Shuffled, or Sequential. Ensure that the access mode is the same for all tests that use the dataset.