SAP Message WO361 - FORM routine '&' in program '&' gives invalid wizard command '&'

Diagnosis FORM routine '&v1&' (module pool '&v2&') did not return a command validfor controlling the wizard with command '&v3&'. System Response The wizard is aborted. Procedure Analyze FORM routine '&v1&' in module pool '&v2&', to see whether avalid wizard command is set there (in parameter COMMAND).