What to verify before replacing an HCM system

QUESTION 01

How do we know replacement is the right move?

Separate software limitations from broken processes, inconsistent data, and missing ownership. Evaluate replacement when the current arrangement cannot meet important requirements at acceptable cost and risk. If the underlying problem is unclear approval ownership, a different platform will not fix it by itself.

Put the answer into practice

• Describe your three highest-impact problems with observable evidence.
• Compare repair, partial replacement, and full replacement against identical requirements.
• Identify what stays: payroll provider, identity service, carriers, finance, and reporting systems.

QUESTION 02

What data should we move, and what should we retain?

Move records needed to operate the agreed scope, and decide separately how history will remain accessible. Moving every old field can preserve confusion; moving too little can undermine audits and employee support. Agree retention with your legal and records teams instead of treating a software checklist as a retention schedule.

Put the answer into practice

• Inventory identifiers, effective-dated changes, balances, elections, and required history.
• Clean duplicates and map codes before trial conversion; preserve relationships and meaning, not just row counts.
• Reconcile records and totals, test archive access, and verify export and deletion responsibilities.

QUESTION 03

How do we distinguish a real integration from a sales claim?

“We have an API” is not the same as a supported connection to your systems. Establish the objects, direction, frequency, authorization, limits, and receiving-system requirements. Test rejected records and replay as carefully as successful transfers. Document who maintains the interface when either system changes.

Put the answer into practice

• Identify what is included, configurable, separately licensed, custom-built, or unsupported.
• Test a future-dated transfer, terminated employee, duplicate message, and failed delivery.
• Require a support owner, alert path, recovery method, and reconciliation checkpoint.

QUESTION 04

What security evidence belongs in the buying decision?

Ask how access is granted, limited, monitored, and removed. Review the scope and date of independently assessed controls rather than assuming a badge covers every service. Your security team should evaluate authentication, role separation, logs, recovery, incident notification, subprocessors, and data-return terms.

Put the answer into practice

• Test employee, manager, administrator, and payroll-reviewer permissions separately.
• Ask which security controls and log access are included in the proposed subscription.
• Request recovery-testing evidence and define notification, export, and deletion responsibilities.

CISA’s buyer guidance emphasizes security capabilities and evidence, including access to security logs. Treat security as a procurement requirement, not a badge on a slide. CISA Secure by Demand guide

QUESTION 05

What matters about the latest AI and automation trends?

Evaluate how decisions change—not whether a vendor says “AI-powered.” For a proposed feature, establish the task, data, reviewer, permission boundary, and way to correct mistakes. Ask whether customer information trains a model, where it is processed, and whether the feature can be disabled. Useful automation reduces verified work without concealing accountability.

Put the answer into practice

• Compare a task with and without the feature using representative inputs.
• Separate predictive scheduling, deterministic rules, generative assistance, and autonomous actions.
• Require approval boundaries for changes affecting people, pay, benefits, or access.

PHCM recommends evaluating a proposed AI feature against a specific task, a named reviewer, and documented failure scenarios before relying on its output. For general background, NIST provides a voluntary framework for managing AI risks. This link is a reference, not a claim of NIST endorsement or PHCM certification. NIST AI Risk Management Framework

QUESTION 06

What must be settled before signing or cutting over?

Compare total operating cost, then use readiness gates to plan timing. Include licensing, implementation, conversions, interfaces, support, training, internal staffing, renewals, and exit costs. Keep an agreed contingency until test results and business owners support cutover; a calendar deadline alone is not readiness.

Put the answer into practice

• List assumptions and exclusions with each cost; a generic guide cannot establish a PHCM price or timeline.
• Test representative cycles and resolve unexplained payroll or benefit differences before approval.
• Document cutover ownership, rollback triggers, record access, communications, and post-launch support.