SAP E-Beyanname Implementation Checklist

An SAP E-Beyanname implementation is more than deploying ABAP code or connecting to a REST API. Tax, SAP, information-security, and operations teams must work from the same scope record. This checklist provides a traceable path from the project decision through the close of the first live filing period.

1. Scope and accountability

• Record GİB’s exact declaration name, tax code, and internal process owner.
• Define company-code, tax-office, taxpayer-liability, and tax-period scope.
• Confirm that the taxpayer’s province or tax office and target period are within GİB’s phased rollout.
• Record REST API, BDP, or a channel to be confirmed for each declaration and period.
• Separate original, correction, late, and special-approval scenarios.
• Assign an owner to monitor GİB announcements and API changes.

Manage this as a declaration–period–province/taxpayer–channel matrix, not a static product list.

2. GİB application and access

• Confirm the organization’s declaration filing and integration-application authority.
• Complete the e-Beyan integration application in the Digital Tax Office.
• Plan real IP addresses for Pre-Prod, Pilot, and Prod.
• Record GİB’s approval status and approved environments.
• Document how a separate API key will be created and rotated for each environment.
• Confirm that API keys never appear in source code, client code, or logs.

GİB’s guide states that an environment-specific token can only be viewed in the window where it is created. Ownership for storage and rotation must be clear before go-live.

3. SAP data and mapping readiness

• Identify the SAP FI, master-data, payroll, and other tax sources.
• Define document-date, posting-date, and tax-period rules.
• Test source filters for cancellations, reversals, and period-end corrections.
• Record the SAP source, transformation rule, and effective date for each target field.
• Obtain tax-team approval for rounding, currency conversion, and blank-value rules.
• Preserve traceability from each declaration line to its source record.

See the SAP E-Beyanname integration architecture for the layer design.

4. Validation and approval model

• Define required-field, type, length, and format controls.
• Define tax-base/rate, account-balance, carried-forward VAT, and total reconciliations.
• Distinguish warnings from blocking errors.
• Separate preparer, reviewer, approver, and submitter roles.
• Record conflicts and segregation-of-duties exceptions.
• Verify that formal filing cannot start before internal approval.

5. Test scenarios

• Run normal and nil-return scenarios.
• Test missing required fields, invalid formats, and duplicates.
• Test unauthorized users, missing/invalid tokens, and unapproved IP addresses.
• Verify that a GİB business-rule error reaches the correct line and owner.
• Test corrections and late filings within the confirmed scope.
• Test chunked upload, timeouts, and safe retry with a large data set.
• Verify the archive for approved declarations, accruals, and error documents.

Use the GİB error response and SAP correction guide to structure error tests.

6. Go-live and operations

• Reconfirm production environment, target period, province or taxpayer scope, IP addresses, and API key.
• Name tax, SAP, and integration owners for the first live period.
• Document rollback and the alternative channel when required.
• Monitor technical errors, GİB business rules, pending approvals, and document retrieval.
• Document API-key rotation, IP-address change, and access removal.
• Review errors, elapsed time, and manual intervention after the first live period.

Definition of done

“The connection works” is not a sufficient definition of done. Completion means that an in-scope declaration has been verified end to end by authorized users: source selection, internal validation and approval, the applicable GİB channel, status tracking, and document archiving.

Review the sample workflow and scope conditions in the interactive simulation of the Fenikstech SAP E-Beyanname solution.

Official sources

• GİB e-Beyan Integration Guide
• GİB announcement of 20 July 2026 on the phased KDV e-Beyan rollout
• GİB e-Beyan REST API developer documentation
• GİB declarations user documentation

This checklist was reviewed against the official sources on 23 July 2026.