Rde 3.1.7 May 2026

Date: April 19, 2026 Applies to: IBM Rational Development Environment (RDE) / IBM i Development

If you are working with RDE version 3.1.7 (often part of IBM Rational Developer for i or System i), you are likely dealing with a legacy but stable environment. This post covers what you need to know about this version, including critical fixes, known quirks, and how to resolve the most frequent support tickets.

What does RDE 3.1.7 mean for someone buying a car today?

It is impossible to discuss RDE 3.1.7 without mentioning Euro 6d (often written Euro 6d-ISC-FCM). rde 3.1.7

| Regulation | Lab Limit (NOx) | RDE CF | Effective RDE Limit | Introduction | | :--- | :--- | :--- | :--- | :--- | | Euro 6b | 80 mg/km | N/A | N/A | Sept 2014 | | Euro 6d-TEMP (RDE 2) | 80 mg/km | 2.1 | 168 mg/km | Sept 2017 | | Euro 6d (RDE 3.1.7) | 80 mg/km | 1.43 | ~114 mg/km | Jan 2020 (new types) |

Euro 6d combined with RDE 3.1.7 also introduced:

Thus, RDE 3.1.7 is the technical backbone of Euro 6d. Without it, the real-world enforcement of Euro 6d would be impossible. Date: April 19, 2026 Applies to: IBM Rational

If you are using a different RDE, please see the note at the bottom.

RDE 3.1.7 eliminates many "loopholes" used by manufacturers:

Before upgrading, try these three steps: It is impossible to discuss RDE 3

Symptoms: You receive "Connection verification failed" even though you can ping the IBM i and use 5250 emulation.

Solution: