The following applies only to CUs that do NOT use the Text-To-Speech (TTS) engine for CU*Talk Audio Response.  In order to read a rate message to a member in CU*Talk Audio Response, the system must find both a recorded message for that position and a rate greater than 0.000 on the corresponding position in your configuration (Tool #882 "Update ARU Interest Rates").  For example, message #1 and rate #1 must both exist in order to read the rate message to the member.
Remember that in order for messages to be recorded you must submit a CU*TALK (Audio Banking) Configuration Change Request Form with the appropriate text so that the voice recording can be created.