# PAC 242 to PAC251 - APIs and Userexits

**URL:** <https://techcommunity.softwareag.com/t/pac-242-to-pac251-apis-and-userexits/79382>\
**Category:** Forum\
**Tags:** Adabas-Natural, Natural, Natural-Add-on-Products, Natural-Predict\
**Created:** [October 30, 2008, 5:06am UTC](https://techcommunity.softwareag.com/t/pac-242-to-pac251-apis-and-userexits/79382 "2008-10-30T05:06:26Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![John\_Smith](https://sea1.discourse-cdn.com/techcommunity/user_avatar/techcommunity.softwareag.com/john_smith/32/39012_2.png) [@John\_Smith](https://techcommunity.softwareag.com/u/John_Smith)\
**Post date:** [October 30, 2008, 5:06am UTC](https://techcommunity.softwareag.com/t/pac-242-to-pac251-apis-and-userexits/79382/1 "2008-10-30T05:06:26Z")

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Hi,

Does anyone know an easy way to migrate PAC version 242 to the last PAC version when you use plenty of USEREXITs and APIs?

May I consider RELEASE NOTES the only place where I could find the information whether there was any changes on APIs ans USERexits?

Is there a function or a specific documentation about the changes in these routines?

Thanks.

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**Author:** ![system](https://global.discourse-cdn.com/techcommunity/original/3X/c/d/cd19967bb605d28a72d77eb83a1cae22f3df2eb8.svg) [@system](https://techcommunity.softwareag.com/u/system)\
**Post date:** [April 2, 2021, 2:51pm UTC](https://techcommunity.softwareag.com/t/pac-242-to-pac251-apis-and-userexits/79382/2 "2021-04-02T14:51:06Z")

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