E-invoice adapter for existing ERP workflows

GSWE integrates technical processing of electronic invoice data into existing ERP workflows. Input validation, mapping and transfer are connected so structured information can be processed with clear business traceability.

Structured invoice data enters the existing workflow with a traceable validation status. Format errors, missing master data and business queries are distinguishable. Finance and IT can address failures at the appropriate stage while retaining the link between the original and its processing history.

First define the formats and processing directions actually needed. Incoming and outgoing workflows have different requirements; existing ERP fields and approval steps form the basis for mapping.

Incoming invoices are validated, matched to suppliers and passed to the existing approval workflow. Outgoing invoices transform approved ERP data into the agreed format and validate it before delivery. Each direction receives its own acceptance criteria and error paths.

Business teams need understandable feedback on rejected and incomplete operations. GSWE connects technical validation to a concrete correction path while preserving responsibility for business decisions.

Custom integration is relevant when an existing ERP or business application does not fully support the required invoice workflow. GSWE first assesses available standard functions and the remaining gap. Development focuses on that integration need and subsequent maintenance of format changes.

Test format validation and business plausibility separately. References, amounts and required information must fit the target process; passing technical validation is not a tax assessment. Updates to validation rules are introduced in a controlled way.

Supported XRechnung and ZUGFeRD versions and profiles are agreed and validated with matching artefacts. XML parsers are protected against unintended external access. Formally valid documents still undergo the agreed business checks.

Project clarification covers the ERP, required formats, anonymized examples and current approval workflow. GSWE defines the integration scope and technical tests; the responsible specialists supply business and tax requirements.

Tell GSWE whether incoming or outgoing invoices are in scope, which formats are involved and how the ERP workflow operates today.