feat: Implement PEPPOL and XRechnung validators for compliance with e-invoice specifications
- Added PeppolValidator class to validate PEPPOL BIS 3.0 invoices, including checks for endpoint IDs, document type IDs, process IDs, party identification, and business rules. - Implemented validation for GLN check digits, document types, and transport protocols specific to PEPPOL. - Added XRechnungValidator class to validate XRechnung 3.0 invoices, focusing on German-specific requirements such as Leitweg-ID, payment details, seller contact, and tax registration. - Included validation for IBAN and BIC formats, ensuring compliance with SEPA regulations. - Established methods for checking B2G invoice indicators and validating mandatory fields for both validators.
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test/test.integrated-validator.ts
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test/test.integrated-validator.ts
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import { tap, expect } from '@git.zone/tstest/tapbundle';
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import { MainValidator, createValidator } from '../ts/formats/validation/integrated.validator.js';
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import { EInvoice } from '../ts/einvoice.js';
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import * as fs from 'fs';
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import * as path from 'path';
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tap.test('Integrated Validator - Basic validation', async () => {
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const validator = new MainValidator();
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const invoice = new EInvoice();
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invoice.invoiceNumber = 'TEST-001';
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invoice.issueDate = new Date('2025-01-11');
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invoice.from = {
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type: 'company',
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name: 'Test Seller',
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address: {
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streetName: 'Test Street',
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city: 'Berlin',
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postalCode: '10115',
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countryCode: 'DE'
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}
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};
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invoice.to = {
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name: 'Test Buyer',
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address: {
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streetName: 'Buyer Street',
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city: 'Munich',
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postalCode: '80331',
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countryCode: 'DE'
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}
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};
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const report = await validator.validate(invoice);
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console.log('Basic validation report:');
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console.log(` Valid: ${report.valid}`);
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console.log(` Errors: ${report.errorCount}`);
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console.log(` Warnings: ${report.warningCount}`);
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console.log(` Coverage: ${report.coverage.toFixed(1)}%`);
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expect(report).toBeDefined();
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expect(report.errorCount).toBeGreaterThan(0); // Should have errors (missing required fields)
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});
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tap.test('Integrated Validator - XRechnung detection', async () => {
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const validator = new MainValidator();
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const invoice = new EInvoice();
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invoice.metadata = {
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profileId: 'urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0',
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buyerReference: '991-12345678901-23' // Leitweg-ID
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};
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invoice.invoiceNumber = 'XR-2025-001';
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invoice.issueDate = new Date('2025-01-11');
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const report = await validator.validate(invoice);
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console.log('XRechnung validation report:');
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console.log(` Profile: ${report.profile}`);
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console.log(` XRechnung errors found: ${
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report.results.filter(r => r.source === 'XRECHNUNG').length
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}`);
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expect(report.profile).toInclude('XRECHNUNG');
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// Check for XRechnung-specific validation
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const xrErrors = report.results.filter(r => r.source === 'XRECHNUNG');
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expect(xrErrors.length).toBeGreaterThan(0);
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});
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tap.test('Integrated Validator - Complete valid invoice', async () => {
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const validator = await createValidator({ enableSchematron: false });
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const invoice = new EInvoice();
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invoice.accountingDocId = 'INV-2025-001';
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invoice.accountingDocType = '380';
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invoice.invoiceNumber = 'INV-2025-001';
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invoice.issueDate = new Date('2025-01-11');
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invoice.currencyCode = 'EUR';
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invoice.from = {
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type: 'company',
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name: 'Example GmbH',
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address: {
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streetName: 'Hauptstraße 1',
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city: 'Berlin',
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postalCode: '10115',
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countryCode: 'DE'
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},
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registrationDetails: {
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vatId: 'DE123456789'
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}
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};
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invoice.to = {
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name: 'Customer AG',
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address: {
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streetName: 'Kundenweg 42',
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city: 'Munich',
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postalCode: '80331',
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countryCode: 'DE'
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}
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};
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invoice.items = [{
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title: 'Consulting Services',
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description: 'Professional consulting',
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quantity: 10,
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unitPrice: 100,
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netAmount: 1000,
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vatRate: 19,
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vatAmount: 190,
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grossAmount: 1190
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}];
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invoice.metadata = {
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customizationId: 'urn:cen.eu:en16931:2017',
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profileId: 'urn:cen.eu:en16931:2017',
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taxDetails: [{
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taxPercent: 19,
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netAmount: 1000,
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taxAmount: 190
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}],
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totals: {
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lineExtensionAmount: 1000,
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taxExclusiveAmount: 1000,
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taxInclusiveAmount: 1190,
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payableAmount: 1190
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}
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};
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const report = await validator.validate(invoice);
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console.log('\nComplete invoice validation:');
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console.log(validator.formatReport(report));
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// Should have fewer errors with more complete data
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expect(report.errorCount).toBeLessThan(10);
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});
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tap.test('Integrated Validator - With XML content', async () => {
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const validator = await createValidator();
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// Load a sample XML file if available
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const xmlPath = path.join(
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process.cwd(),
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'corpus/xml-rechnung/3.1/ubl/01-01a-INVOICE_ubl.xml'
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);
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if (fs.existsSync(xmlPath)) {
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const xmlContent = fs.readFileSync(xmlPath, 'utf-8');
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const invoice = await EInvoice.fromXML(xmlContent);
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const report = await validator.validateAuto(invoice, xmlContent);
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console.log('\nXML validation with Schematron:');
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console.log(` Format detected: ${report.format}`);
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console.log(` Schematron enabled: ${report.schematronEnabled}`);
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console.log(` Validation sources: ${
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[...new Set(report.results.map(r => r.source))].join(', ')
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}`);
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expect(report.format).toBeDefined();
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} else {
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console.log('Sample XML not found, skipping XML validation test');
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}
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});
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tap.test('Integrated Validator - Capabilities check', async () => {
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const validator = new MainValidator();
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const capabilities = validator.getCapabilities();
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console.log('\nValidator capabilities:');
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console.log(` Schematron: ${capabilities.schematron ? '✅' : '❌'}`);
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console.log(` XRechnung: ${capabilities.xrechnung ? '✅' : '❌'}`);
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console.log(` PEPPOL: ${capabilities.peppol ? '✅' : '❌'}`);
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console.log(` Calculations: ${capabilities.calculations ? '✅' : '❌'}`);
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console.log(` Code Lists: ${capabilities.codeLists ? '✅' : '❌'}`);
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expect(capabilities.xrechnung).toBeTrue();
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expect(capabilities.calculations).toBeTrue();
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expect(capabilities.codeLists).toBeTrue();
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});
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tap.test('Integrated Validator - Deduplication', async () => {
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const validator = new MainValidator();
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// Create invoice that will trigger duplicate errors
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const invoice = new EInvoice();
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invoice.invoiceNumber = 'TEST-DUP';
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const report = await validator.validate(invoice);
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// Check that duplicates are removed
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const ruleIds = report.results.map(r => r.ruleId);
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const uniqueRuleIds = [...new Set(ruleIds)];
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console.log(`\nDeduplication test:`);
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console.log(` Total results: ${report.results.length}`);
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console.log(` Unique rule IDs: ${uniqueRuleIds.length}`);
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// Each rule+field combination should appear only once
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const combinations = new Set();
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let duplicates = 0;
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for (const result of report.results) {
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const key = `${result.ruleId}|${result.field || ''}`;
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if (combinations.has(key)) {
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duplicates++;
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}
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combinations.add(key);
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}
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console.log(` Duplicate combinations: ${duplicates}`);
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expect(duplicates).toEqual(0);
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});
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export default tap.start();
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