om-scogo Managing ManagedEventSubscription
Create, read, update, and delete ManagedEventSubscription metadata — the Salesforce construct for durably subscribing to platform event channels with managed replay tracking.
Scope
- In scope: Generating and modifying
.managedEventSubscription-meta.xmlfiles for create, read, update, and delete operations - Out of scope: Creating the underlying platform event (
__e) channel itself; Flow-based or Apex-based event subscriptions; deploying metadata to an org - Only generate one file — the
.managedEventSubscription-meta.xmlfile. Do NOT generate the referenced platform event object or any other metadata type.
Clarifying Questions
Before generating, confirm if not already clear:
- What is the topic name? (see format table in
references/topic-name-formats.md) - What is the developer name? (required for Create — alphanumeric and underscores only, no spaces; optional for Read/Update/Delete if
Idis known) - What is the label (human-readable name)?
- What default replay preset —
LATEST(default) orEARLIEST? - What error recovery replay preset —
LATEST(default) orEARLIEST? - What should the initial state be —
RUN(active) orSTOP(inactive)? (default:RUN)
Required Inputs
Gather or infer before proceeding:
- Operation: create, read, update, or delete
- DeveloperName: required for Create (becomes the filename); optional for Read/Update/Delete if
Idis provided instead - Id: Tooling API record Id — can be used to identify the subscription for Read/Update/Delete instead of DeveloperName
- label: human-readable label (can include spaces)
- topicName: event channel path — read
references/topic-name-formats.mdfor valid formats (platform events, change events, custom channels) - defaultReplay:
LATESTorEARLIEST(default:LATEST) - errorRecoveryReplay:
LATESTorEARLIEST(default:LATEST) - state:
RUNorSTOP(default:RUN) —PAUSEis reserved for internal platform use and will be rejected withINVALID_INPUT - version: Metadata API version (default: match org API version, e.g.
67.0)
Workflow
Create
- Gather inputs — confirm DeveloperName, label, topicName, defaultReplay, errorRecoveryReplay, state, version. Apply defaults for any omitted fields. If DeveloperName is not provided, ask the user — do not derive it from the label.
- Confirm the topic exists — ask the user to confirm the event channel already exists in the org before proceeding. Do NOT generate the platform event object yourself — that is out of scope for this skill. If the user says it doesn't exist yet, stop and direct them to create it first using the
platform-custom-object-generateskill, then return here. - Read the template — load
assets/managed-event-subscription-template.xmlas the starting structure. - Generate the file — produce
managedEventSubscriptions/<DeveloperName>.managedEventSubscription-meta.xmlfilled with user-provided values. - Verify — run the checklist below before presenting output.
- Guide the user on subscribing — after deployment, the subscription can be identified for Pub/Sub API
ManagedSubscribeRPC calls using either theDeveloperNameor the recordId. To retrieve theId, run:SELECT Id, DeveloperName FROM ManagedEventSubscription WHERE DeveloperName='<DeveloperName>'via the Tooling API.
Read
- Identify the subscription — accept either
IdorDeveloperName; preferIdif provided. - Show the file path —
managedEventSubscriptions/<DeveloperName>.managedEventSubscription-meta.xml(if DeveloperName known). - Retrieve and display — read and present the current XML content.
Update
- Identify the subscription — accept either
IdorDeveloperName; preferIdif provided. - Read the existing file — load current content before modifying.
- Apply changes — update only the specified fields; preserve all others.
- Read
references/update-constraints.mdfor fields that cannot be changed after creation. - Verify — run the checklist below before presenting output.
Delete
- Identify the subscription — accept either
IdorDeveloperName; confirm with the user before proceeding. - Warn — deleting a ManagedEventSubscription permanently removes replay tracking state.
- Produce deletion instructions — explain how to remove the file and deploy the destructive change using
destructiveChanges.xml. - Read
references/delete-guide.mdfor the destructive deployment procedure.
Rules / Constraints
| Constraint | Rationale |
|---|---|
<topicName> must use a valid path prefix |
Platform events use /event/Name__e; change events use /data/Name; see references/topic-name-formats.md for all formats |
<defaultReplay> and <errorRecoveryReplay> must be LATEST or EARLIEST |
These are the only valid enum values; any other value fails metadata validation |
<state> must be RUN or STOP |
PAUSE is reserved for internal platform use — the API rejects it with INVALID_INPUT: You can create a managed event subscription state field only to RUN or STOP |
| All six required elements must be present | topicName, defaultReplay, errorRecoveryReplay, label, state, version are all required; omitting any causes a deploy error |
| DeveloperName must be unique within the org | Duplicate names cause DUPLICATE_DEVELOPER_NAME errors |
Do not include <namespacePrefix>, <id>, or <createdDate> |
Read-only platform fields; including them causes deployment failures in unpackaged orgs |
Gotchas
| Issue | Resolution |
|---|---|
The topicName field is invalid on deploy |
Wrong format or the event doesn't exist in the org — read references/topic-name-formats.md for correct path |
| Replay state lost after delete + recreate | Deleting discards stored replay position; recreating starts from defaultReplay — avoid reusing the same DeveloperName after delete |
INVALID_TYPE on SOQL query |
ManagedEventSubscription is only queryable via Tooling API, not standard SOQL |
EARLIEST replay on high-volume channels |
Can trigger up to 72 hours of backlog replay on activation; always confirm with the user |
| Metadata not supported in older orgs | ManagedEventSubscription requires API v60.0+; check org API version |
eventChannel or isActive in generated XML |
These are wrong field names — use topicName and state (RUN/STOP) instead |
PAUSE state in generated XML |
PAUSE is reserved for internal platform use and will be rejected with INVALID_INPUT — only use RUN or STOP |
| User unsure how to identify subscription for Pub/Sub API | Both DeveloperName and record Id can be used with ManagedSubscribe RPC — retrieve the Id via Tooling API if needed: SELECT Id FROM ManagedEventSubscription WHERE DeveloperName='<name>' |
| Changes not reflected immediately in Pub/Sub API | After create/update/delete, the Pub/Sub API can take up to ~2 minutes to reflect the new config; if ManagedSubscribe returns NOT_FOUND, wait and retry |
Verification Checklist
Before presenting any generated XML:
- Does
<topicName>follow a valid path format perreferences/topic-name-formats.md? (/event/Name__e,/data/NameChangeEvent,/data/ChangeEvents,/event/Name__chn,/data/Name__chn) - Is
<defaultReplay>exactlyLATESTorEARLIEST? - Is
<errorRecoveryReplay>exactlyLATESTorEARLIEST? - Is
<state>exactlyRUNorSTOP? (PAUSEis invalid for user-created subscriptions) - Is
<label>populated? - Is
<version>present (e.g.67.0)? - Are read-only fields (
<id>,<createdDate>,<namespacePrefix>) absent? - Does the filename match the DeveloperName exactly?
Output Expectations
- Create / Update:
managedEventSubscriptions/<DeveloperName>.managedEventSubscription-meta.xml— this is the only file to generate - Delete: instructions to remove the file and deploy via
destructiveChanges.xml - Read: display of existing file contents
Cross-Skill Integration
| Need | Delegate to |
|---|---|
Create the platform event channel (__e) being subscribed to |
platform-custom-object-generate skill |
| Subscribe via Flow (Process Automation) | automation-flow-generate skill |
| Deploy metadata to org | platform-metadata-deploy skill |
Reference File Index
| File | When to read |
|---|---|
assets/managed-event-subscription-template.xml |
Before generating any new subscription — use as starting structure |
references/topic-name-formats.md |
When setting <topicName> — covers platform events, change events, and custom channels |
references/update-constraints.md |
During Update workflow — to check which fields are immutable post-creation |
references/delete-guide.md |
During Delete workflow — for destructive change deployment procedure |