Imported from PranavNagrecha/AwesomeSalesforceSkills (skills/apex/npsp-custom-rollups/SKILL.md). Install upstream with npx skills add PranavNagrecha/AwesomeSalesforceSkills --skill npsp-custom-rollups. Copyright stays with the author.

NPSP Custom Rollups (CRLP)

This skill activates when a practitioner needs to configure, repair, or extend NPSP Customizable Rollups (CRLP). It covers rollup definition setup, filter group design, batch job modes, and the irreversible migration from legacy NPSP rollups.

Before Starting

Gather this context before working on anything in this domain:

• CRLP enabled status: Open NPSP Settings > Customizable Rollups and confirm whether CRLP is already enabled. Enabling CRLP is a one-way migration — it removes all user-defined legacy NPSP rollup configurations permanently with no rollback path.
• Legacy rollup dependencies: Audit formula fields, validation rules, flows, and Apex that read NPSP rollup summary fields (e.g., npo02__TotalOppAmount__c, npo02__LastCloseDate__c). These fields continue to exist after migration but will only populate if equivalent CRLP rollup definitions are created.
• NPSP managed package version: CRLP was introduced in NPSP 3.112. Verify the installed version under Setup > Installed Packages before referencing features from recent releases.

Core Concepts

Rollup Definitions

A Rollup Definition is a custom metadata record (type: Customizable_Rollup__mdt) that describes a single aggregation operation. Each definition specifies:

CRLP ships with a set of default Rollup Definitions that replicate the standard NPSP rollup fields. Practitioners can clone these defaults or create entirely new definitions for custom fields.

Filter Groups

A Filter Group is a named set of field-level criteria that can be attached to one or more Rollup Definitions. For example, a "Major Gift" filter group might restrict the rollup to Opportunities with Amount >= 10000. Rules:

• Filter group names are limited to 40 characters. Names that exceed this limit cause a save error that is not clearly surfaced in the UI.
• A single filter group can include multiple filter rows combined with AND/OR logic.
• Large filter groups (many rows) can cause the NPSP Settings page to time out on save. Deploy via Metadata API for complex configurations.
• Filter groups are referenced by Rollup Definitions — one filter group can be shared across many rollup definitions, which keeps configuration DRY.

Batch Job Modes

CRLP rollups are not real-time. They require a batch job to recalculate values on summary records. NPSP provides three modes, accessible under NPSP Settings > Batch Processing:

The dirty flag is set automatically when a related Opportunity is inserted, updated, or deleted. Bulk data loads via Data Loader or Bulk API may bypass the dirty flag mechanism — always run a Full recalculation after any significant data import.

One-Way CRLP Migration

Enabling CRLP removes all user-defined legacy NPSP rollup configurations. The platform does not warn about downstream formula fields or automations that read those rollup fields. Before enabling:

1. Export the current list of legacy rollup fields from the NPSP Rollups tab.
2. Identify every formula field, validation rule, flow, and Apex class that reads those fields.
3. Create equivalent CRLP Rollup Definitions before enabling CRLP, or document the gap explicitly.
4. After enabling CRLP, run a Full recalculation batch immediately to populate values.

Common Patterns

Pattern: Custom Gift Rollup With Date Range Filter Group

When to use: The org tracks a specific giving window (fiscal year, membership year, or campaign period) and needs a rollup that totals only gifts within that window.

How it works:

1. Create a Filter Group named after the window — keep the name to 40 characters or fewer (e.g., "FY25 Unrestricted Gifts" is fine; "Current Fiscal Year Unrestricted Gifts Only" is too long at 43 characters).
2. Add filter rows: CloseDate >= [start date] and CloseDate <= [end date]. NPSP supports relative date tokens for rolling windows.
3. Create a Rollup Definition: Summary Object = Contact, Aggregate Operation = Sum, Amount Field = Amount, Store Field = a custom currency field on Contact, and attach the filter group.
4. Run a Full recalculation batch to populate all historical values.
5. Schedule Incremental recalculation nightly to keep current data fresh.

Why not the alternative: Standard Salesforce roll-up summary fields do not support cross-object date-relative filters without additional formulas, and they do not work across lookup relationships — only master-detail.

Pattern: Sandbox-to-Production Deployment of CRLP Configuration

When to use: CRLP configuration is being built in a sandbox and the org needs a reliable, reviewable deployment path to production.

How it works:

1. Build and test all Rollup Definitions and Filter Groups in the sandbox NPSP Settings UI.
2. Verify values on spot-checked Contact and Account records match expected figures after a Full recalculation batch.
3. Export definitions as custom metadata records using the Metadata API (type: CustomMetadata).
4. Deploy using a change set or SFDX deployment package. CRLP definitions are custom metadata and deploy cleanly through standard tooling.
5. After deploying to production, run a Full recalculation immediately — production values will be stale until the batch completes.
6. Monitor the batch job logs under NPSP Settings > Batch Processing for errors or partial failures.

Why not the alternative: Manually recreating rollup definitions in production is error-prone, cannot be peer-reviewed as code, and introduces version drift between environments.

Decision Guidance

Recommended Workflow

1. Audit the current state — check whether CRLP is already enabled (NPSP Settings > Customizable Rollups). If not enabled, export legacy rollup fields and identify all formula fields, flows, Apex, and validations that read them before proceeding.
2. Design rollup definitions and filter groups — draft each rollup in a planning document: summary object, detail object, aggregate operation, amount/date field, date range type (calendar vs. fiscal), store field, and any filter criteria. Verify filter group names are 40 characters or fewer.
3. Build and validate in sandbox — create Rollup Definitions and Filter Groups in the sandbox NPSP Settings UI. Run a Full recalculation batch and compare output values to expected figures on representative test records.
4. Deploy to production via Metadata API — export custom metadata records and deploy with a change set or SFDX deployment package. Never recreate manually in production.
5. Enable CRLP in production if not already enabled — only after all dependent formula fields and automations have been verified or updated. Enabling is irreversible.
6. Run Full recalculation and verify — trigger Full recalculation immediately after any major configuration change or data load. Monitor under NPSP Settings > Batch Processing until the job completes successfully.
7. Schedule ongoing recalculation — set up a Scheduled Full recalculation for nightly or weekly maintenance. Use Incremental recalculation for higher-frequency intraday syncs if the org has high transaction volume.

Review Checklist

Run through these before marking work in this area complete:

• All Rollup Definitions have Summary Object, Detail Object, Aggregate Operation, Amount/Date Field, and Store Field populated
• Filter group names are 40 characters or fewer
• A Full recalculation batch has been run and completed without errors
• Formula fields and automations that read legacy rollup fields have been audited and updated if necessary
• Rollup values on spot-checked Contact and Account records match expected figures
• Rollup Definitions are deployed via Metadata API (not manually recreated in production)
• Scheduled batch job is configured for ongoing recalculation

Salesforce-Specific Gotchas

Non-obvious platform behaviors that cause real production problems:

1. Enabling CRLP permanently removes legacy rollup configurations — There is no undo. User-defined legacy rollup overrides are deleted, and no warning is shown about dependent formula fields or flows that read those fields. Always perform a full dependency audit before enabling.
2. CRLP values are not real-time — A newly created opportunity will not update Contact or Account rollup fields until the next batch run. Any process that expects rollup fields to be current immediately after an opportunity save will read stale data.
3. Filter group names have a 40-character hard limit — The UI does not clearly enforce this constraint before submission. A name over 40 characters either silently truncates or returns a generic error. Always count characters before saving.

Output Artifacts

Related Skills

• npsp-vs-nonprofit-cloud-decision — use when evaluating whether to stay on NPSP or migrate to NPC; CRLP definitions do not migrate to NPC automatically
• npsp-program-management — use when aggregating Program Management Module data; CRLP is not the correct tool for PMM service delivery aggregation