https://community.sap.com/t5/technology-q-a/how-to-handle-sql-null-dates-in-crufl-function-for-crystal-reports/qaa-p/14353188#M4938892 <P>What version of CR for VS are you using?</P><P>What Version of Crystal Reports are you using?</P><P>What version of VS are you using?</P><P>In CR designer click on File, Options and check this option:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="DonWilliams_0-1773915439015.png" style="width: 400px;"><img src="https://community.sap.com/t5/image/serverpage/image-id/386103iD9D95ECF276607A8/image-size/medium?v=v2&amp;px=400" role="button" title="DonWilliams_0-1773915439015.png" alt="DonWilliams_0-1773915439015.png" /></span></P><P>See if that resolves your issue...</P><P>See this sample UFL project:&nbsp;<A href="https://userapps.support.sap.com/sap/support/knowledge/en/1603381" target="_blank">https://userapps.support.sap.com/sap/support/knowledge/en/1603381</A></P><P>&nbsp;</P> Thu, 19 Mar 2026 10:21:22 GMT DonWilliams 2026-03-19T10:21:22Z https://community.sap.com/t5/technology-q-a/how-to-handle-sql-null-dates-in-crufl-function-for-crystal-reports/qaq-p/14351847 <P>In VB6, the Date type can accept Crystal Reports' internal "null date" sentinel (12/30/1899) so formula does not break. In C#, a DateTime parameter cannot accept NULL. If Crystal pass a NULL value, you will hit "Not enough memory operation" error. If "DateTime?" parameter will be used, the CRUFL function will not appear in the Formula Editor.</P> Wed, 18 Mar 2026 09:07:58 GMT https://community.sap.com/t5/technology-q-a/how-to-handle-sql-null-dates-in-crufl-function-for-crystal-reports/qaq-p/14351847 junrayb86 2026-03-18T09:07:58Z https://community.sap.com/t5/technology-q-a/how-to-handle-sql-null-dates-in-crufl-function-for-crystal-reports/qaa-p/14353188#M4938892 <P>What version of CR for VS are you using?</P><P>What Version of Crystal Reports are you using?</P><P>What version of VS are you using?</P><P>In CR designer click on File, Options and check this option:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="DonWilliams_0-1773915439015.png" style="width: 400px;"><img src="https://community.sap.com/t5/image/serverpage/image-id/386103iD9D95ECF276607A8/image-size/medium?v=v2&amp;px=400" role="button" title="DonWilliams_0-1773915439015.png" alt="DonWilliams_0-1773915439015.png" /></span></P><P>See if that resolves your issue...</P><P>See this sample UFL project:&nbsp;<A href="https://userapps.support.sap.com/sap/support/knowledge/en/1603381" target="_blank">https://userapps.support.sap.com/sap/support/knowledge/en/1603381</A></P><P>&nbsp;</P> Thu, 19 Mar 2026 10:21:22 GMT https://community.sap.com/t5/technology-q-a/how-to-handle-sql-null-dates-in-crufl-function-for-crystal-reports/qaa-p/14353188#M4938892 DonWilliams 2026-03-19T10:21:22Z https://community.sap.com/t5/technology-q-a/how-to-handle-sql-null-dates-in-crufl-function-for-crystal-reports/qaa-p/14355970#M4939070 Pass in the same default null date as CRD uses.... Mon, 23 Mar 2026 13:49:08 GMT https://community.sap.com/t5/technology-q-a/how-to-handle-sql-null-dates-in-crufl-function-for-crystal-reports/qaa-p/14355970#M4939070 DonWilliams 2026-03-23T13:49:08Z https://community.sap.com/t5/technology-q-a/how-to-handle-sql-null-dates-in-crufl-function-for-crystal-reports/qaa-p/14356256#M4939083 Thanks for the response. However, changing the Null Treatment to "Default Values for Nulls" does not resolve the issue. I still encounter the "Not enough memory for operation." error. I am using CR 2016 and compile the CRUFL DLL using VS 2022. Mon, 23 Mar 2026 17:41:49 GMT https://community.sap.com/t5/technology-q-a/how-to-handle-sql-null-dates-in-crufl-function-for-crystal-reports/qaa-p/14356256#M4939083 junrayb86 2026-03-23T17:41:49Z https://community.sap.com/t5/technology-q-a/how-to-handle-sql-null-dates-in-crufl-function-for-crystal-reports/qaa-p/14358826#M4939289 <P>Did you have a look at the sample UFL I linked, lot's of info in it on how to make CRD recognize the UFL?And set's the Framework CRD works under for the UFL to use using an INI file.</P><P>What SP version of CR for VS .NET are you using?</P><P>Note that CR 2016 is a 32 bit app so you must compile the UFL in 32 bit for CRD to find it.</P><P>Since you are using VS 2022 you must use the CR for VS 64 bit installer, you can install the 32 bit runtime when it prompts at the end of the install.</P><P>&nbsp;</P> Thu, 26 Mar 2026 11:21:32 GMT https://community.sap.com/t5/technology-q-a/how-to-handle-sql-null-dates-in-crufl-function-for-crystal-reports/qaa-p/14358826#M4939289 DonWilliams 2026-03-26T11:21:32Z