Diagnosis
The business partner is only assigned to the object/contract in theperiod &V3&-&V4&. However, the object (or contract) has a validityperiod from &V1&-&V2&. The business partner is therefore not assigned tothe object or contract at any time when it is actually valid.

Procedure
This is a warning message.If you have intentionally assigned the partnerin the defined period (for example because the contract will probably beextended) you do not need to do anything.
However, if the assignment period is unintentionally outside thevalidity period, correct your entries.