Adobe Audience Manager event calls preserve DCS identity pairs.

DCS event calls use optional request attributes rather than the ID Service's required version and organization fields. Identity pairs and response settings are checked against their own published formats.

What this pack matches

Hosts: demdex.net
Paths: /event
Vendor docs: experienceleague.adobe.com/en/docs/audience-manager/user-guide/api-and-sdk-code/dcs/dcs-api-reference/dcs-keys

Rules

Codes are stable. A finding in CI, MCP, or the playground lands on the same id.

Field	Required	What it checks	Rule ids	Source
`d_mid`	optional	It is an existing ECID. Adobe's reuse call sends d_mid with d_ver=2. Fix: Send d_mid when you already have an Experience Cloud ID for the visitor.	`vendor.adobe-dcs-event.param.d_mid.empty`	docs
`d_cid`	optional	Provider ID or integration code with user ID separated by %01. Single pairs may include0/1/2authentication state. The generic DCS table permits multiple provider/user pairs in one parameter; the CID guide also permits repeated keys.	`vendor.adobe-dcs-event.param.d_cid.empty` `vendor.adobe-dcs-event.param.d_cid.invalid`	docs
`d_cb`	optional	The vendor documents `d_cb` in the request contract.	`vendor.adobe-dcs-event.param.d_cb.empty`	docs
`d_cid_ic`	optional	Provider ID or integration code with user ID separated by %01. Single pairs may include0/1/2authentication state. The generic DCS table permits multiple provider/user pairs in one parameter; the CID guide also permits repeated keys.	`vendor.adobe-dcs-event.param.d_cid_ic.empty` `vendor.adobe-dcs-event.param.d_cid_ic.invalid`	docs
`d_caller`	optional	Caller identification; no published character grammar.	`vendor.adobe-dcs-event.param.d_caller.empty`	docs
`d_coppa`	optional	Disables third-party-cookie use. Published table specifies behavior without a complete literal-value enum.		docs
`d_cts`	optional	Optional account-enabled traits/segments return mode:1legacy segment IDs or2current IDs.	`vendor.adobe-dcs-event.param.d_cts.empty` `vendor.adobe-dcs-event.param.d_cts.invalid`	docs
`d_dpid`	optional	Deprecated data provider ID, still supported in ID and event calls.	`vendor.adobe-dcs-event.param.d_dpid.empty`	docs
`d_dpuuid`	optional	Deprecated provider-specific user ID, still supported in ID and event calls.	`vendor.adobe-dcs-event.param.d_dpuuid.empty`	docs
`d_dst`	optional	Include URL destination data in a JSON response.	`vendor.adobe-dcs-event.param.d_dst.empty` `vendor.adobe-dcs-event.param.d_dst.invalid`	docs
`d_dst_filter`	optional	Reserved Analytics/Audience Manager integration attribute with unpublished value grammar.		docs
`d_jsonv`	optional	Response JSON version1;0disables ID syncs.	`vendor.adobe-dcs-event.param.d_jsonv.empty` `vendor.adobe-dcs-event.param.d_jsonv.invalid`	docs
`d_nsid`	optional	JavaScript container namespace used by DIL for ID synchronization; account namespace registration is external.	`vendor.adobe-dcs-event.param.d_nsid.empty`	docs
`d_ptfm`	optional	Published platform literal registry.	`vendor.adobe-dcs-event.param.d_ptfm.empty` `vendor.adobe-dcs-event.param.d_ptfm.invalid`	docs
`d_rs`	optional	Deprecated reserved Analytics/Audience Manager attribute, without a published value grammar.		docs
`d_rtbd`	optional	JSON response selector. Required when a JSON response is requested; absence returns a pixel.	`vendor.adobe-dcs-event.param.d_rtbd.empty` `vendor.adobe-dcs-event.param.d_rtbd.invalid`	docs
`d_sid`	optional	Trait/segment score ID; membership is account configuration.	`vendor.adobe-dcs-event.param.d_sid.empty`	docs
`d_tdpid`	optional	Data source for trait evaluation. Public examples use/event, and the linked generic DCS table does not exclude/id.	`vendor.adobe-dcs-event.param.d_tdpid.empty`	docs
`d_tdpid_ic`	optional	Integration-code form of trait-evaluation data source. Source uses/event examples without declaring/id exclusion.	`vendor.adobe-dcs-event.param.d_tdpid_ic.empty`	docs
`d_uuid`	optional	Audience Manager visitor UUID when absent from cookie; numeric-only grammar is not published in this table.	`vendor.adobe-dcs-event.param.d_uuid.empty`	docs
`h_host`	optional	Client collection hostname represented as DCS HTTP-header attribute, without a complete serialized query grammar.		docs
`h_user-agent`	optional	User-Agent header value represented as DCS HTTP-header attribute, without a complete serialized query grammar.		docs
`h_accept-language`	optional	Accept-Language header value represented as DCS HTTP-header attribute, without a complete serialized query grammar.		docs
`h_referer`	optional	Referer header value represented as DCS HTTP-header attribute, without a complete serialized query grammar.		docs
`h_referrer`	optional	Referrer header value represented as DCS HTTP-header attribute, without a complete serialized query grammar.		docs
`h_date`	optional	Date header value represented as DCS HTTP-header attribute, without a complete serialized query grammar.		docs
`c_*…`	optional	Public customer-defined DCS attribute. The key prefix is published; the value schema is configured by the customer.		docs
`p_*…`	optional	Private customer-defined DCS attribute, used for trait evaluation and not logged. The key prefix is published; the value schema is configured by the customer.		docs

Validate a payload

pixellint validate url "$ARTIFACT" --rulepack vendor/adobe-dcs-event

Try this failing payload in the playground. A DCS event call with an incomplete identity pair.

https://example.demdex.net/event?d_cid=123

cargo install pixellint · npm install pixellint