you cannot directly use an existing master dimension within the definition of another master dimension. However, you can achieve similar functionality by using variables. Here's how you can do it:
1. you can create a variable that holds the expression of your existing master dimension.
2. Then you can use this variable in a New Master Dimension.
Example
//Define a Variable
SET vMasterDim = [YourMasterDimensionExpression];
// Create a New Master Dimension
- Go to Master Items > Dimensions > Create new, and in the expression editor, use the variable:
$(vMasterDim)
I hope this helps.
