Dear all,
UDF is alpha Numeric field and which contain the value like 1:1 , 1:50 etc. :xxxxxx is showing the quantity into UDF.
Document is contain the 51 quantity into Quantity column. But when I am input the 1:1, 1:50 then it's okay but When I am input 1:1, (1:51 / 1:200) then it's crossed the Quantity column value. How can I stop here for excessed the quantity into UDF?
For reference purpose, I have attached snap.

How can I set validation here?
SAP Business One HANA
Regards,
Nikunj Mehta