Define the payable outcome
At define the payable outcome checkpoint 1, the vendor invoice custody workflow needs a named owner, declared population, authoritative source, required fields, timestamps, and acceptance rule. Accounts payable support may assemble records, check completeness, apply an approved calculation, and route exceptions, but it must not create vendor facts, approve invoices or payments, change bank details, waive policy, interpret contracts or tax rules, or attest that unsupported work is complete.
A reproducible vendor invoice custody record at checkpoint 1 retains source identifiers, receipt time, preparer, state, reason code, evidence link, reviewer, and correction history. Missing values remain unavailable rather than becoming favorable assumptions. Reviewers compare system values with retained evidence, record disagreements, assign repairs, and preserve prior values. The process owner approves thresholds based on risk, systems, contracts, jurisdiction, volume, and supplier expectations; no universal target is implied.
Map source custody
At map source custody checkpoint 2, the vendor invoice custody workflow needs a named owner, declared population, authoritative source, required fields, timestamps, and acceptance rule. Accounts payable support may assemble records, check completeness, apply an approved calculation, and route exceptions, but it must not create vendor facts, approve invoices or payments, change bank details, waive policy, interpret contracts or tax rules, or attest that unsupported work is complete.
A reproducible vendor invoice custody record at checkpoint 2 retains source identifiers, receipt time, preparer, state, reason code, evidence link, reviewer, and correction history. Missing values remain unavailable rather than becoming favorable assumptions. Reviewers compare system values with retained evidence, record disagreements, assign repairs, and preserve prior values. The process owner approves thresholds based on risk, systems, contracts, jurisdiction, volume, and supplier expectations; no universal target is implied.
Use the related specialist service role as a starting point for defining scope and evidence.
Use observable states
At use observable states checkpoint 3, the vendor invoice custody workflow needs a named owner, declared population, authoritative source, required fields, timestamps, and acceptance rule. Accounts payable support may assemble records, check completeness, apply an approved calculation, and route exceptions, but it must not create vendor facts, approve invoices or payments, change bank details, waive policy, interpret contracts or tax rules, or attest that unsupported work is complete.
A reproducible vendor invoice custody record at checkpoint 3 retains source identifiers, receipt time, preparer, state, reason code, evidence link, reviewer, and correction history. Missing values remain unavailable rather than becoming favorable assumptions. Reviewers compare system values with retained evidence, record disagreements, assign repairs, and preserve prior values. The process owner approves thresholds based on risk, systems, contracts, jurisdiction, volume, and supplier expectations; no universal target is implied.
Separate preparation from approval
At separate preparation from approval checkpoint 4, the vendor invoice custody workflow needs a named owner, declared population, authoritative source, required fields, timestamps, and acceptance rule. Accounts payable support may assemble records, check completeness, apply an approved calculation, and route exceptions, but it must not create vendor facts, approve invoices or payments, change bank details, waive policy, interpret contracts or tax rules, or attest that unsupported work is complete.
A reproducible vendor invoice custody record at checkpoint 4 retains source identifiers, receipt time, preparer, state, reason code, evidence link, reviewer, and correction history. Missing values remain unavailable rather than becoming favorable assumptions. Reviewers compare system values with retained evidence, record disagreements, assign repairs, and preserve prior values. The process owner approves thresholds based on risk, systems, contracts, jurisdiction, volume, and supplier expectations; no universal target is implied.
GAO Green Book provides public guidance that can help your team test relevant workflow assumptions.
Build the exception queue
At build the exception queue checkpoint 5, the vendor invoice custody workflow needs a named owner, declared population, authoritative source, required fields, timestamps, and acceptance rule. Accounts payable support may assemble records, check completeness, apply an approved calculation, and route exceptions, but it must not create vendor facts, approve invoices or payments, change bank details, waive policy, interpret contracts or tax rules, or attest that unsupported work is complete.
A reproducible vendor invoice custody record at checkpoint 5 retains source identifiers, receipt time, preparer, state, reason code, evidence link, reviewer, and correction history. Missing values remain unavailable rather than becoming favorable assumptions. Reviewers compare system values with retained evidence, record disagreements, assign repairs, and preserve prior values. The process owner approves thresholds based on risk, systems, contracts, jurisdiction, volume, and supplier expectations; no universal target is implied.
Compare this approach with our guide to the next related workflow.
Protect access and changes
At protect access and changes checkpoint 6, the vendor invoice custody workflow needs a named owner, declared population, authoritative source, required fields, timestamps, and acceptance rule. Accounts payable support may assemble records, check completeness, apply an approved calculation, and route exceptions, but it must not create vendor facts, approve invoices or payments, change bank details, waive policy, interpret contracts or tax rules, or attest that unsupported work is complete.
A reproducible vendor invoice custody record at checkpoint 6 retains source identifiers, receipt time, preparer, state, reason code, evidence link, reviewer, and correction history. Missing values remain unavailable rather than becoming favorable assumptions. Reviewers compare system values with retained evidence, record disagreements, assign repairs, and preserve prior values. The process owner approves thresholds based on risk, systems, contracts, jurisdiction, volume, and supplier expectations; no universal target is implied.
Review a declared sample
At review a declared sample checkpoint 7, the vendor invoice custody workflow needs a named owner, declared population, authoritative source, required fields, timestamps, and acceptance rule. Accounts payable support may assemble records, check completeness, apply an approved calculation, and route exceptions, but it must not create vendor facts, approve invoices or payments, change bank details, waive policy, interpret contracts or tax rules, or attest that unsupported work is complete.
A reproducible vendor invoice custody record at checkpoint 7 retains source identifiers, receipt time, preparer, state, reason code, evidence link, reviewer, and correction history. Missing values remain unavailable rather than becoming favorable assumptions. Reviewers compare system values with retained evidence, record disagreements, assign repairs, and preserve prior values. The process owner approves thresholds based on risk, systems, contracts, jurisdiction, volume, and supplier expectations; no universal target is implied.
Measure flow honestly
At measure flow honestly checkpoint 8, the vendor invoice custody workflow needs a named owner, declared population, authoritative source, required fields, timestamps, and acceptance rule. Accounts payable support may assemble records, check completeness, apply an approved calculation, and route exceptions, but it must not create vendor facts, approve invoices or payments, change bank details, waive policy, interpret contracts or tax rules, or attest that unsupported work is complete.
A reproducible vendor invoice custody record at checkpoint 8 retains source identifiers, receipt time, preparer, state, reason code, evidence link, reviewer, and correction history. Missing values remain unavailable rather than becoming favorable assumptions. Reviewers compare system values with retained evidence, record disagreements, assign repairs, and preserve prior values. The process owner approves thresholds based on risk, systems, contracts, jurisdiction, volume, and supplier expectations; no universal target is implied.
Prepare outage continuity
At prepare outage continuity checkpoint 9, the vendor invoice custody workflow needs a named owner, declared population, authoritative source, required fields, timestamps, and acceptance rule. Accounts payable support may assemble records, check completeness, apply an approved calculation, and route exceptions, but it must not create vendor facts, approve invoices or payments, change bank details, waive policy, interpret contracts or tax rules, or attest that unsupported work is complete.
A reproducible vendor invoice custody record at checkpoint 9 retains source identifiers, receipt time, preparer, state, reason code, evidence link, reviewer, and correction history. Missing values remain unavailable rather than becoming favorable assumptions. Reviewers compare system values with retained evidence, record disagreements, assign repairs, and preserve prior values. The process owner approves thresholds based on risk, systems, contracts, jurisdiction, volume, and supplier expectations; no universal target is implied.
Common questions answered
Who approves decisions about vendor invoice custody?
Authorized finance, procurement, legal, tax, treasury, security, or management owners retain judgment for vendor invoice custody; support staff prepare and route evidence.
How should missing vendor invoice custody evidence be handled?
Keep the item unavailable, assign a reason and owner, and escalate it without inferring a favorable result.
How often should vendor invoice custody be reviewed?
Use an owner-approved risk cadence and review again after changes to systems, policy, volume, suppliers, or responsibilities.
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