How to implement function keys in cics ...Interview ask me there is requirement to include two function key in the program F1 and F2 Keys...when F1 key  is press record should be inserted into database after reading the input file and when F2 is press ,record should be updated in databased...explain about the entire process including testing also..?please expain in step by step ?

HeadStrong, Polaris,

There is map and length of field need to modified, let take cust id=2 is previous of 2 byte and now it has to be 5 byte ? how to modified the cics code ?what are change need to done ? where where u will do change ?