# Invoice fraud checks for Sage 100 Contractor Sage 100 Contractor covers part of invoice fraud checks on its own. Pulsify flags changed bank details, an invalid or missing tax ID and emails that fail sender checks. Invoice fraud checks look for fake invoices and changed bank details before money leaves your account. ## What Sage 100 Contractor does on its own Sage 100 Contractor keeps record history and field history on vendor records. The history shows each change with user, date and before and after values, so you can review bank or payee changes. It is a review tool with no hold, second approver or call back step. - No bank check. - No bank detail call back or approval step. ## What you need in Sage 100 Contractor - Company administrator set-up in the 7-2-2 User List - A window with a View menu ## Setting it up in Sage 100 Contractor Where to find it: View > Record history / Field history 1. Limit who can edit vendor records with Sage security. 2. Open the vendor and choose View > Record history to see each change. 3. Filter by database table, user or application when there are many rows. 4. Click a row to open History Details with each field before and after the change. 5. With Field history on, a changed field shows in yellow. Press F12 on the field for its history. 6. Confirm any bank change with the vendor on a known phone number. ## Good to know in Sage 100 Contractor - History is kept for 180 days by default. The retention period is set for the company in Database Administration. - History options switch off when you close the window or move to another record, so check each vendor one at a time. - For 1099 vendors you can check the name and TIN with IRS TIN Matching in e-Services. The check happens at the IRS, not in Sage. ## How to do it in Sage 100 Contractor ### How to control vendor bank detail changes in Sage 100 Contractor Do not change vendor bank details in Sage 100 Contractor from an email. Phone the vendor on a number you already hold, get a second approval, then update the vendor record. Full guide: https://www.pulsify.tech/how-to/control-supplier-bank-detail-changes-in-sage-100-contractor/ ### How to set up a new vendor safely in Sage 100 Contractor Before the first bill, collect a signed W-9 and the vendor's bank details, check the name and TIN match, phone to confirm, have a second person approve the vendor record in Sage 100 Contractor, then enter the first payable invoice. Full guide: https://www.pulsify.tech/how-to/set-up-a-new-supplier-safely-in-sage-100-contractor/ ### How to check a vendor's TIN in Sage 100 Contractor Collect a W-9 from the vendor before you pay, then save their TIN in Sage 100 Contractor. Check the name and TIN match. Filers of 1099s can validate them with IRS TIN Matching. Full guide: https://www.pulsify.tech/how-to/check-a-vendors-tin-in-sage-100-contractor/ ## What Pulsify adds 1. Pulsify compares the bank details on each invoice with the supplier's past invoices and your contact in Sage 100 Contractor. 2. It flags a tax ID that differs from the vendor record or is missing. 3. If an email fails sender checks and the sender's domain enforces it, Pulsify holds the email and warns you. 4. Each document gets one signal in the queue: Needs fix, Check or Ready. Pulsify connects to Sage 100 Contractor. We set up the connection for you. What Pulsify does not do: - Flags are warnings. Call the supplier on a number you already have before paying new bank details. - Pulsify never moves money. ## Common questions ### Does Sage 100 Contractor log changes to vendor bank details? Yes, through View > Record history and Field history on the vendor record. They show the user, date and before and after values. They do not block or hold a change. ### How long is history kept? 180 days by default. The retention policy is set for the company in Database Administration, so an older change may not be listed. ### Does Sage 100 Contractor verify a vendor's tax ID? No match inside Sage was found. You enter the TIN in Federal Id# and can check it with IRS TIN Matching if you are an authorized payer. ### What is the most common invoice fraud? A fake email asking you to update a supplier's bank details. The next real invoice is then paid to the fraudster's account. ## Sources - https://help-sage100contractor.na.sage.com/Sage100Contractor/US/25_1/Content/Modules/4-Accounts_Payable/About_payable_invoices.htm - https://help-sage100contractor.na.sage.com/Sage100Contractor/US/25_1/Content/Appendices/A-Sage100ContractorFeatures/ViewingChangeHistoryInRecords_Fields.htm - https://help-sage100contractor.na.sage.com/Sage100Contractor/US/25_1/Content/Modules/4-Accounts_Payable/About_vendor_financial_information.htm - https://www.irs.gov/government-entities/indian-tribal-governments/taxpayer-identification-number-tin-on-line-matching Source: https://www.pulsify.tech/invoice-fraud-checks-for-sage-100-contractor/ (last checked 2026-10-19)