>I seem to be having a new issue with one of my applications.
>
>An error is being returned, Update Conflict zgetmaxitem line 4 data source inspdata.
>
>inspdata is a table in a database that is part of a form's DE. Shared, not exclusive.
>
>The zgetmaxitem is a procedure I have defined in the form.
>
>as follows;
>
>

>IF !EOF('inspdata') AND !BOF('inspdata')
>	LOCAL lnRecNo
>	lnRecNo=RECNO('inspdata')
>	CALCULATE MAX(inspdata.itemnum) FOR inspdata.jobnum==(inspheader.jobnum) TO lnMaxItem
>	IF lnRecNo>0
>		GO lnRecNo IN 'inspdata'
>	endif	
>	RETURN lnMaxItem
>ELSE
>	RETURN 0
>endif
>

Try

	LOCAL lnRecNo, lcJobNo, lnOldSelect
                    lcJobNo = InspHeader.JobNum
	lnRecNo=RECNO('inspdata')
                    lnOldSelect = select()
                    select InspData
	CALCULATE MAX(ItemNum) FOR jobnum==m.lcJobNo TO lnMaxItem

                     lnMaxItem = NVL(m.lnMaxItem,0)
                     if lnRecNo > 0
                         goto m.lnRecNo in InspData
                    endif
                     select (m.lnOldSelect)

In other words, try using a variable for JobNo from related table.

In addition, can you show the UPDATE command? What is the purpose of the procedure - if it's to generate next ItemNum per JobNum, this procedure may not guarantee 100% uniqueness.