Grid components did not get generated correctly because they fall outside the specified XY tolerance.
Increase or decrease the XY tolerance value in the tool before generating the grid.
The XY tolerance is the minimum tolerated distance between geodatabase features. This distance is expressed in the units specified by the grid's primary coordinate system. Features that fall within the set XY tolerance will be considered coincident. The XY tolerance must be set to at least the precision of the chosen geodatabase dataset or a value of zero. The precision of the database is determined by taking the inverse of the X/Y domain's scale and projecting this value into the grid's primary coordinate system.