update

ts/einvoice.ts

@@ -267,7 +267,7 @@ export class EInvoice implements TInvoice {
       }
 
       // Get appropriate decoder
-      const decoder = DecoderFactory.createDecoder(xmlString);
+      const decoder = DecoderFactory.createDecoder(xmlString, !this.options.validateOnLoad);
       const invoice = await decoder.decode();
       
       // Map the decoded invoice to our properties
@@ -528,6 +528,14 @@ export class EInvoice implements TInvoice {
     return this.detectedFormat;
   }
 
+  /**
+   * Gets the original XML string
+   * @returns The XML string
+   */
+  public getXml(): string {
+    return this.xmlString;
+  }
+
   /**
    * Calculates the total net amount
    */

ts/formats/base/base.decoder.ts

@@ -8,9 +8,11 @@ import type { ValidationResult } from '../../interfaces/common.js';
  */
 export abstract class BaseDecoder {
   protected xml: string;
+  protected skipValidation: boolean;
 
-  constructor(xml: string) {
+  constructor(xml: string, skipValidation: boolean = false) {
     this.xml = xml;
+    this.skipValidation = skipValidation;
   }
 
   /**

ts/formats/cii/cii.decoder.ts

@@ -12,8 +12,8 @@ export abstract class CIIBaseDecoder extends BaseDecoder {
   protected select: xpath.XPathSelect;
   protected profile: CIIProfile = CIIProfile.EN16931;
 
-  constructor(xml: string) {
-    super(xml);
+  constructor(xml: string, skipValidation: boolean = false) {
+    super(xml, skipValidation);
 
     // Parse XML document
     this.doc = new DOMParser().parseFromString(xml, 'application/xml');

ts/formats/cii/facturx/facturx.decoder.ts

@@ -116,8 +116,10 @@ export class FacturXDecoder extends CIIBaseDecoder {
       objectActions: []
     };
     
-    // Validate mandatory EN16931 fields
-    EN16931Validator.validateMandatoryFields(invoiceData);
+    // Validate mandatory EN16931 fields unless validation is skipped
+    if (!this.skipValidation) {
+      EN16931Validator.validateMandatoryFields(invoiceData);
+    }
     
     return invoiceData;
   }

ts/formats/cii/zugferd/zugferd.decoder.ts

@@ -115,8 +115,10 @@ export class ZUGFeRDDecoder extends CIIBaseDecoder {
       objectActions: []
     };
     
-    // Validate mandatory EN16931 fields
-    EN16931Validator.validateMandatoryFields(invoiceData);
+    // Validate mandatory EN16931 fields unless validation is skipped
+    if (!this.skipValidation) {
+      EN16931Validator.validateMandatoryFields(invoiceData);
+    }
     
     return invoiceData;
   }

ts/formats/cii/zugferd/zugferd.v1.decoder.ts

@@ -11,9 +11,10 @@ export class ZUGFeRDV1Decoder extends CIIBaseDecoder {
   /**
    * Constructor
    * @param xml XML string to decode
+   * @param skipValidation Whether to skip EN16931 validation
    */
-  constructor(xml: string) {
-    super(xml);
+  constructor(xml: string, skipValidation: boolean = false) {
+    super(xml, skipValidation);
     // Override namespaces for ZUGFeRD v1
     this.namespaces = {
       rsm: ZUGFERD_V1_NAMESPACES.RSM,

ts/formats/factories/decoder.factory.ts

@@ -15,32 +15,33 @@ export class DecoderFactory {
   /**
    * Creates a decoder for the specified XML content
    * @param xml XML content to decode
+   * @param skipValidation Whether to skip EN16931 validation
    * @returns Appropriate decoder instance
    */
-  public static createDecoder(xml: string): BaseDecoder {
+  public static createDecoder(xml: string, skipValidation: boolean = false): BaseDecoder {
     const format = FormatDetector.detectFormat(xml);
 
     switch (format) {
       case InvoiceFormat.UBL:
       case InvoiceFormat.XRECHNUNG:
-        return new XRechnungDecoder(xml);
+        return new XRechnungDecoder(xml, skipValidation);
 
       case InvoiceFormat.CII:
         // For now, use Factur-X decoder for generic CII
-        return new FacturXDecoder(xml);
+        return new FacturXDecoder(xml, skipValidation);
 
       case InvoiceFormat.ZUGFERD:
         // Determine if it's ZUGFeRD v1 or v2 based on root element
         if (xml.includes('CrossIndustryDocument') ||
             xml.includes('urn:ferd:CrossIndustryDocument:invoice:1p0') ||
             (xml.includes('ZUGFeRD') && !xml.includes('CrossIndustryInvoice'))) {
-          return new ZUGFeRDV1Decoder(xml);
+          return new ZUGFeRDV1Decoder(xml, skipValidation);
         } else {
-          return new ZUGFeRDDecoder(xml);
+          return new ZUGFeRDDecoder(xml, skipValidation);
         }
 
       case InvoiceFormat.FACTURX:
-        return new FacturXDecoder(xml);
+        return new FacturXDecoder(xml, skipValidation);
 
       case InvoiceFormat.FATTURAPA:
         // return new FatturaPADecoder(xml);
@@ -49,11 +50,11 @@ export class DecoderFactory {
       default:
         // If format is unknown but contains CrossIndustryInvoice, try ZUGFeRD decoder
         if (xml.includes('CrossIndustryInvoice')) {
-          return new ZUGFeRDDecoder(xml);
+          return new ZUGFeRDDecoder(xml, skipValidation);
         }
         // If format is unknown but contains CrossIndustryDocument, try ZUGFeRD v1 decoder
         if (xml.includes('CrossIndustryDocument')) {
-          return new ZUGFeRDV1Decoder(xml);
+          return new ZUGFeRDV1Decoder(xml, skipValidation);
         }
         throw new Error(`Unsupported invoice format: ${format}`);
     }

ts/formats/ubl/ubl.decoder.ts

@@ -11,8 +11,8 @@ export abstract class UBLBaseDecoder extends BaseDecoder {
   protected namespaces: Record<string, string>;
   protected select: xpath.XPathSelect;
 
-  constructor(xml: string) {
-    super(xml);
+  constructor(xml: string, skipValidation: boolean = false) {
+    super(xml, skipValidation);
 
     // Parse XML document
     this.doc = new DOMParser().parseFromString(xml, 'application/xml');

ts/formats/ubl/xrechnung/xrechnung.decoder.ts

@@ -247,8 +247,10 @@ export class XRechnungDecoder extends UBLBaseDecoder {
         }
       };
       
-      // Validate mandatory EN16931 fields
-      EN16931Validator.validateMandatoryFields(invoiceData);
+      // Validate mandatory EN16931 fields unless validation is skipped
+      if (!this.skipValidation) {
+        EN16931Validator.validateMandatoryFields(invoiceData);
+      }
       
       return invoiceData;
     } catch (error) {