SAP Message WRF_ARTICLE_SCREENS028 - At least one article hierarchy assignment must have the correct validity

Diagnosis There is no assignment with a validity period to 31.12.9999. To be ableto define a main assignment, at least one assignment must exist with amaximum validity period. In addition, the valid-from date cannot be in the future. System Response The system cannot transfer the entered assignments. Procedure Adjust the Valid from date of an assignment in such a way that it endson 31.12.9999.