diff --git a/spec/v2/diagrams/events.mmd b/spec/v2/diagrams/events.mmd
new file mode 100644
index 00000000..0b23374f
--- /dev/null
+++ b/spec/v2/diagrams/events.mmd
@@ -0,0 +1,25 @@
+sequenceDiagram
+ participant D as Data Recipient
+ participant H as Data Owner
+
+ Note over D, H: Data Recipient requests a new or updated PCF from Host System
+ D->>H: POST [SubPath]/2/events
+ Activate H
+ break Does not accept event
+ H->>D: Returns with HTTP Code 400
+ end
+
+ H->>D: Returns with HTTP Code 200
+ Deactivate H
+
+ Note over D, H: Host system now processes the request as specified in Business Case 1
+
+ alt PCFs do not exist / partial match
+ H->>H: Host system decides on processing potentially involving skilled personnel
+ H->>D: Sends event with either PCFs or error body
+ else 1 or more matching PCFs exist
+ Note over H: Sends matching PCFs as an event
+ H->>D: Sends event containing matching PCFs
+ else Default case
+ H->>D: Sends event with an error body
+ end
diff --git a/spec/v2/index.bs b/spec/v2/index.bs
index 3257244a..a51b6819 100644
--- a/spec/v2/index.bs
+++ b/spec/v2/index.bs
@@ -1,6 +1,6 @@
Title: Technical Specifications for PCF Data Exchange
-Text Macro: VERSION 2.2.1-20240513
+Text Macro: VERSION 2.2.1-20240624
Shortname: data-exchange-protocol
Level: 1
Status: LD
@@ -177,6 +177,17 @@ For now, this chapter focuses on asynchronous event processing. It will be expan
#### Workflow #### {#business-cases-async-events-1-workflow}
+A graphical representation of the workflow is given below. However, this flow is for illustrative
+purposes only and does not replace or otherwise alter the text below the diagram.
+
+Note: All requests to the `/events` endpoint require authentication (omitted from the diagram
+below). See [[#api-auth]] for details.
+
+
+
+ Event processing workflow.
+
+
1. The data recipient sends a `ProductFootprintFragment` to the `Events Endpoint` of the data owner. The data recipient should always include 1 or more product ids in property `productIds`. The data recipient should limit each fragment to exactly 1 specific product (e.g. a specific type of apple instead of all apples that somebody is offering)
1. If the recipient is requesting a specific reporting period, it should include the reporting
period accordingly
@@ -2527,6 +2538,11 @@ path: LICENSE.md
# Appendix B: Changelog # {#changelog}
+## Version 2.2.1 (June 24, 2024) ## {#changelog-2.2.1-20240624}
+
+Summary of changes:
+1. add diagram with visual representation of asynchronous event processing workflow
+
## Version 2.2.1 (May 13, 2024) ## {#changelog-2.2.1-20240513}
Summary of changes: