When (before) using the Sales Information System (SIS - with InfoStructures) you might have
to ensure that the InfoStructures are being updated. Take a look at transaction OVRO and OVRP and OMO1.
Some comments from OSS note 491519:
Application 01 (Sales information system):
Self-defined MCSI
InfoStructure -> Report -> Transaction(s)
S001 RMCV0100 MCTA MC(A MC+A MC+E MC+I
S002 RMCV0600 MCTG MC(M MC-A MC-E MC-I
S003 RMCV0300 MCTE MC(I MC+2 MC+6 MC+Y
S004 RMCV0200 MCTC MC(E MC+M MC+Q MC+U
S005 RMCV0400 MCTK MC(U MC-0
S006 RMCV0500 MCTI MC(Q MC-M MC-Q MC-U
S016 RMCV0800 MCTV01
S017 RMCV0900 MCTV02
S018 RMCV1000 MCTV03
S019 RMCV1100 MCTV04
S020 RMCV1200 MCTV05
S128 RMCV0700
S138 RMCV1300 MC(B