AD Splice is used to create Custom Application in R12.2

• If you are an upgrade customer with a custom product top in the context file but have not run adsplice, you must remove the relevant entry from the FND_OAM_CONTEXT_CUSTOM table and then run AutoConfig on all nodes.
• The same approach needs to be taken if you have any custom context variables with more than eight characters, as a custom schema abbreviation cannot exceed eight charcters.

After performing either of the above steps, you should run adsplice to add/register the custom product (after applying the latest AD-TXK RUP).

Creating a Custom Application in Oracle E-Business Suite Release 12.2 (Doc ID 1577707.1)