I forgot another thing is that the sort function failed in maintaining the Rm ID according to its sequential listing eg. N315, N316, N317...... S315, S316, S317... N319, S319 (OK) .... S320, S321 (N320 is jumbled elsewhere) and entire IDs say, N322, S322, N324, S324 missing. I confirm that all these data fields were entered as I had them printed out yesterday. When I sorted today, I found the data jumbled. One explanation I cd think of, is that I'd created Rm ID2 whereby the digits came prior to the letter so 315-N, 315-S, 316-N, 316-S which I had felt allowed me the manoeuvrebility of sorting data according to room numbers rather than the North-N and S-South. In the Advance sort function, the dialog box allows for entry of primary key and value/cell color, etc. to enable sort which i had complied with - but apparently, it does not work. Thanks for recommendation on how to fix this. Zedar