SYMPTOM:
When validating a consolidation arranged such that 0-, the equation is re-arranged such that making the formula invalid.
Consider a consolidation using a nested formula as the one show in the screenshot below:

Sample Code/Error
Formula: 0 -
After clicking the "Validate" button, the consolidation formula gets rearranged as shown below:

CAUSE:
This is a known issue in Strategy Developer 9.x and 10.x.
ACTION:
Contact Strategy Technical Support for an update on the status of this issue.
WORKAROUND:
To resolve this issue, eliminate nesting in calculation by distributing the negative sign to the appropriate components as shown below:

Sample Code/Error
Formula: (y-x-z)
Sample Code/Error
Formula:
KB39182