3305474 - "Post rejected due to pending warning messages" is raised in FI Fiori posting apps

"Post rejected due to pending warning messages" error message is raised in apps: Post General Journal Entries, Post Incoming Payments or Post Outgoing Payments. 

SAP S/4HANA 2021

FDC_POSTING_001000, FDC_POSTING_001/000, FDC_POSTING_001 000, longtext, You can’t make the posting while there are open warning messages, F0718, F1345, F1612  , KBA , FI-FIO-GL-TRA , Transaction Apps , FI-AR-AR-A , Posting/Clearing/Special General Ledger , FI-AP-AP-A , Posting/Clearing/Special General Ledger , FI-GL-GL-A , Posting/Clearing , FI-FIO-GL , Fiori UI for General Ledger Accounting , FI-FIO-AP , Fiori UI for Accounts Payable , FI-FIO-AR , Fiori UI for Accounts Receivable , FI-FIO-AR-TRA , Transaction Apps , FI-FIO-AP-TRA , Transaction Apps , Problem