Choose a business system by walking one real transaction.

Start with something real enough to expose the business model: a customer order, a purchase request, a support case, or a project change. Choose one with ordinary complexity rather than the easiest possible example. The people who operate the process should recognize the records, decisions, and exceptions.

Write down where it begins and what counts as finished. A request being submitted is not the same as approved. An order being marked complete is not necessarily the same as delivered, accepted, or paid. These distinctions help the evaluation focus on a business outcome instead of the number of screens in the product.

Identify the main record and the references it needs. A quote may need an account, contact, opportunity, products, quantities, prices, and terms. A maintenance job may need an asset, location, work order, findings, and a release decision. Check whether those relationships reflect the way your organization actually works.

Look for the facts that must remain stable and the values that can change. Confirm the identifiers, units, currencies, dates, required fields, and lifecycle states. A flexible field is useful only when the team agrees what belongs in it. Configuration should preserve the meaning needed by later workflows and reports.

Walk the transaction with the roles that participate. Who submits it? Who reviews the evidence? Who may approve it? Who performs the resulting work? Who handles a problem? At each transition, ask what information the receiving person needs and what confirms that responsibility has moved.

Then test the permissions behind those roles. A screen that looks right for a manager does not establish that another caller is prevented from performing the same action. Include a user with less access, and check the relevant operation through the supported interface. Record both the expected permission and the observed result.

An ideal transaction proves that the happy path is possible. An exception reveals how the system supports real operations. Change a quantity after review, reject an inspection, remove a required reference, delay a delivery, or cancel part of the work. Choose the case your team regularly spends time resolving.

Check whether the records still explain what happened and what remains to be done. Does the process require another approval? Does a downstream report include the right amount? Can the operator distinguish the original request from the corrected one? A usable exception path should have a state, an owner, and a next action.

Use a small dataset whose totals and states can be checked independently. Confirm the report’s population, date field, unit, currency, and treatment of incomplete or cancelled work. A polished dashboard can still answer the wrong question if its definitions do not match the process.

For an integration, verify the receiving system as well as the originating request. A successful API response or workflow run may establish one technical step, while the business outcome depends on further processing. Retain the references needed to investigate differences between the systems.

Summarize the fit, the required configuration, the data that must move, the integrations, and the remaining questions. Assign each unresolved item to an owner. Keep the acceptance criteria specific enough that someone can repeat the test after the app is configured or changed.

ERP.AI’s catalogue helps you find candidate applications by function and operating model. Use their modules and process detail to narrow the choice, then walk your transaction. The strongest selection is the one your team can explain in terms of records, decisions, access, exceptions, and a clear operating handoff.