Solution : https://service.sap.com/sap/support/notes/1931772 (SAP Service marketplace login required)
Summary : 
      SAP Note discusses the adjustments necessary for SAP ERP systems due to new VAT regulations effective in Poland from January 1, 2014. Key changes include specific conditions on the timing of VAT liability, such as the due date being tied to the supply of goods or services and invoice issuance regulations. VAT intra-community transactions must be adjusted if invoices are missing after three months. The implementation involves updates on VAT date placements within FI and MM documents, as well as guidelines on handling various scenarios in sales and purchasing to comply with new legislation. Existing SAP Notes provide recommendations for setting up proper VAT date configurations under new regulations.
Key words : 
components xx-csc-pl-lo logistics priority recommendations / additional info category announcement, customer component xx-csc-pl-fi financial accounting, poland overdue invoices report 1806889   lc announcment- reduce, tax reporting date vatdate 1055835   redetermining tax values, moment wydania towaru lub wykonania usługi, component xx-csc-pl-fi, update vat date = goods receipt date, xx-csc-pl-lo, 2014 1943239   validating tax reporting date based, sap recommends setting vat date initially
Related Notes : 
       
| 1806889 | |
| 1840734 | |
| 730466 | Legal requirement: Translate tax base with tax rate | 
| 1055835 | |
| 1947124 | |
| 1957918 | |
| 1956599 | |
| 1232484 | How to use the VAT due date, tax reporting date VATDATE | 
| 1576111 | Entering tax rate and using it for national currency | 
| 1943239 | Validating tax reporting Date based on document date | 
| 1931772 | 2014 VAT law changes, UE directive implementation | 
| 1319334 | POLAND: transfer VAT due date from SD to FI (VATDATE) |