I've created a measure that uses the LINESTX function and the DAX definition must reference the columns that are part of the returned table of the function, such as Slope1 and Intercept, see docs: https://learn.microsoft.com/en-us/dax/linestx-function-dax
These create warnings in the validation since they look like measures that are supposed to be defined already in the model.
It could be confusing for others who aren't familiar with the details of the DAX but are making edits and then might be trying to resolve this warning.
I've created a measure that uses the LINESTX function and the DAX definition must reference the columns that are part of the returned table of the function, such as Slope1 and Intercept, see docs: https://learn.microsoft.com/en-us/dax/linestx-function-dax
These create warnings in the validation since they look like measures that are supposed to be defined already in the model.
It could be confusing for others who aren't familiar with the details of the DAX but are making edits and then might be trying to resolve this warning.