Impact increase maximum length in AFF Values set

Summary:

Understood that oracle not recommended to increase maximum length in AFF Values set.

But we have very urgent requirement for this and on screen wise it can be changed, saved and deployed.

Content (please ensure you mask any confidential information):

Understood that oracle not recommended to increase maximum length in AFF Values set.

But we have very urgent requirement for this and on screen wise it can be changed, saved and deployed.

We have asked SR but SR stated they don't know at what event and when the error/UNEXPECTED will occurs.

Someone have tried to increase and experience on this?