topic Intermittent PDF Export Failure with QlikView API - 'Prohibit validate' Error&quot; in QlikView https://community.qlik.com/t5/QlikView/Intermittent-PDF-Export-Failure-with-QlikView-API-Prohibit/m-p/2514822#M1231636 <P class="">Hello everyone,<BR />we are encountering issues with the <STRONG>QlikView API (Interop.QlikView)</STRONG> — specifically, we're trying to export a report to <STRONG>PDF using our own printer</STRONG>. Sometimes the PDF is generated without any issues, and other times it fails.</P><P class="">Looking into the .qvw log file, we found the following entries:</P><DIV class=""><DIV class=""><DIV class=""><DIV class="">&nbsp;</DIV></DIV></DIV><DIV class=""><SPAN><SPAN class="">20250415</SPAN>T143120.<SPAN class="">000</SPAN>+<SPAN class="">0200</SPAN> <SPAN class="">20250415</SPAN>T143122.<SPAN class="">000</SPAN>+<SPAN class="">0200</SPAN> <SPAN class="">1</SPAN> <SPAN class="">300</SPAN> <SPAN class="">Error</SPAN> Doc::GetLayout <SPAN class="">error</SPAN>:<SPAN class="">14</SPAN> message:<SPAN class="">"Prohibit validate"</SPAN>: c22cd5b-aac9-<SPAN class="">4</SPAN>bcb-a4a3-a2a04b04288 <SPAN class="">20250415</SPAN>T143353.<SPAN class="">000</SPAN>+<SPAN class="">0200</SPAN> <SPAN class="">20250415</SPAN>T143354.<SPAN class="">000</SPAN>+<SPAN class="">0200</SPAN> <SPAN class="">1</SPAN> <SPAN class="">300</SPAN> <SPAN class="">Error</SPAN> ListBox::GetListBoxCellsEx <SPAN class="">error</SPAN>:<SPAN class="">14</SPAN> message:<SPAN class="">"Prohibit validate"</SPAN>: <SPAN class="">89</SPAN>db8e5-d38c-<SPAN class="">4742</SPAN>-ba62-<SPAN class="">82</SPAN>b6c819910</SPAN></DIV><DIV class="">&nbsp;</DIV></DIV><P class="">We're using <STRONG>C# - .NET Framework 4.6</STRONG>.</P> Mon, 26 Jan 2026 16:26:21 GMT alessandrovernile 2026-01-26T16:26:21Z Intermittent PDF Export Failure with QlikView API - 'Prohibit validate' Error" https://community.qlik.com/t5/QlikView/Intermittent-PDF-Export-Failure-with-QlikView-API-Prohibit/m-p/2514822#M1231636 <P class="">Hello everyone,<BR />we are encountering issues with the <STRONG>QlikView API (Interop.QlikView)</STRONG> — specifically, we're trying to export a report to <STRONG>PDF using our own printer</STRONG>. Sometimes the PDF is generated without any issues, and other times it fails.</P><P class="">Looking into the .qvw log file, we found the following entries:</P><DIV class=""><DIV class=""><DIV class=""><DIV class="">&nbsp;</DIV></DIV></DIV><DIV class=""><SPAN><SPAN class="">20250415</SPAN>T143120.<SPAN class="">000</SPAN>+<SPAN class="">0200</SPAN> <SPAN class="">20250415</SPAN>T143122.<SPAN class="">000</SPAN>+<SPAN class="">0200</SPAN> <SPAN class="">1</SPAN> <SPAN class="">300</SPAN> <SPAN class="">Error</SPAN> Doc::GetLayout <SPAN class="">error</SPAN>:<SPAN class="">14</SPAN> message:<SPAN class="">"Prohibit validate"</SPAN>: c22cd5b-aac9-<SPAN class="">4</SPAN>bcb-a4a3-a2a04b04288 <SPAN class="">20250415</SPAN>T143353.<SPAN class="">000</SPAN>+<SPAN class="">0200</SPAN> <SPAN class="">20250415</SPAN>T143354.<SPAN class="">000</SPAN>+<SPAN class="">0200</SPAN> <SPAN class="">1</SPAN> <SPAN class="">300</SPAN> <SPAN class="">Error</SPAN> ListBox::GetListBoxCellsEx <SPAN class="">error</SPAN>:<SPAN class="">14</SPAN> message:<SPAN class="">"Prohibit validate"</SPAN>: <SPAN class="">89</SPAN>db8e5-d38c-<SPAN class="">4742</SPAN>-ba62-<SPAN class="">82</SPAN>b6c819910</SPAN></DIV><DIV class="">&nbsp;</DIV></DIV><P class="">We're using <STRONG>C# - .NET Framework 4.6</STRONG>.</P> Mon, 26 Jan 2026 16:26:21 GMT https://community.qlik.com/t5/QlikView/Intermittent-PDF-Export-Failure-with-QlikView-API-Prohibit/m-p/2514822#M1231636 alessandrovernile 2026-01-26T16:26:21Z