Please ensure that you have the below kind of scripting for applymap in your code.
Customermaster:
mapping load * inline [
CompanyID, CustomerName
111,A
222,B
333,C];
Transtock:(if this is where you want to use applymap, otherwise change the table name as appropriate)
applymap('Customermaster',CompanyID) as CustomerName // this will provide the corresponding customername of the CompanyID which presents in the Customermaster table
Please note in this, the mapping table(i.e Customermaster) table will not be visible in the table structure.
Hard to say without seeing the script but you first mention the name Customermaster and then use CustomerMaster in the applymap() function. Check spelling to make sure you're not crashing there.
