https://userapps.support.sap.com/sap/support/knowledge/en/3385547
3385547 - Posting date must not be in the future Message No. RU043 in IW41. | SAP Knowledge Base...
When make confirmation in IW41 and fill 'Posting Date' with a date in the future. System would issue the error message No. RU043 'Posting date must not be in...