https://community.esri.com/t5/arcmap-questions/coordinate-system-transformation/m-p/1119489#M3217 <P>I need to make a Geographic Coordinate System Transformation from "GSS_International_1924" to "GCS_ETRS_1989" but my ArcMap (Version 10.4) doesn't have any method for that.</P><P>Can somebody help me?</P> Tue, 23 Nov 2021 10:54:58 GMT rcravidao 2021-11-23T10:54:58Z https://community.esri.com/t5/arcmap-questions/coordinate-system-transformation/m-p/1119489#M3217 <P>I need to make a Geographic Coordinate System Transformation from "GSS_International_1924" to "GCS_ETRS_1989" but my ArcMap (Version 10.4) doesn't have any method for that.</P><P>Can somebody help me?</P> Tue, 23 Nov 2021 10:54:58 GMT https://community.esri.com/t5/arcmap-questions/coordinate-system-transformation/m-p/1119489#M3217 rcravidao 2021-11-23T10:54:58Z https://community.esri.com/t5/arcmap-questions/coordinate-system-transformation/m-p/1119518#M3218 <P>"International_1924" is a spheroid, not a datum.</P><P>You should try "GCS_European_1950".</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="JayantaPoddar_2-1637675164970.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/28082iA9AE0F9BACE03C12/image-size/medium?v=v2&amp;px=400" role="button" title="JayantaPoddar_2-1637675164970.png" alt="JayantaPoddar_2-1637675164970.png" /></span></P><P>&nbsp;</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="JayantaPoddar_1-1637675017064.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/28081iBDC4CA50492A5ABC/image-size/medium?v=v2&amp;px=400" role="button" title="JayantaPoddar_1-1637675017064.png" alt="JayantaPoddar_1-1637675017064.png" /></span></P><P>&nbsp;</P> Tue, 23 Nov 2021 13:46:26 GMT https://community.esri.com/t5/arcmap-questions/coordinate-system-transformation/m-p/1119518#M3218 JayantaPoddar 2021-11-23T13:46:26Z