Exception:[java.lang.StringIndexOutOfBoundsException: String index out of range: 7]

Hello experts,

I have three fields in play the Filler, Collect_No & Value_Parts. Below is a description of each field.

When using the substring function (0....7)on the Filler value, & mapping it to  Value_Parts, the value RRF5765 is obtained.

Applying the very same function on Filler & mapping it to Collect_No gives the below exception

"

"

Please help me with the issue.

Any thought on the issue is appreciated.

Thanks in Advance

Sam