Message SAP WXP688 - No authorization to change the interface for planning step &2

Diagnosis
You want to maintain the interfaces for planning step &V2&. You do not,however, have authorization to do this.

SYSTEM_RESPONSE<(>&<)>
Processing was cancelled.

WHAT_TO_DO<(>&<)>
Contact your system administrator for authorization to maintaininterfaces for planning scenarion/planning step &V1&/&V2&. The relevantauthorization object is W_WXP_INT.