diff --git a/api-v3/src/inspection-visits/dto/create-field-finding.dto.ts b/api-v3/src/inspection-visits/dto/create-field-finding.dto.ts
new file mode 100644
index 0000000..9d74192
--- /dev/null
+++ b/api-v3/src/inspection-visits/dto/create-field-finding.dto.ts
@@ -0,0 +1,58 @@
+import { Transform, Type } from 'class-transformer';
+import {
+  IsInt,
+  IsOptional,
+  IsString,
+  IsUUID,
+  Matches,
+  Max,
+  MaxLength,
+  Min,
+  MinLength,
+  ValidateIf,
+} from 'class-validator';
+
+const optionalText = ({ value }: { value: unknown }) =>
+  typeof value === 'string' && value.trim() ? value.trim() : null;
+
+/**
+ * Hallazgo capturado desde la APK sobre un Inventario ya seleccionado.
+ * El assetId se toma de la URL para evitar inconsistencias entre pantalla y payload.
+ */
+export class CreateFieldFindingDto {
+  @IsOptional()
+  @Transform(optionalText)
+  @IsUUID('4')
+  catalogItemId?: string | null;
+
+  @ValidateIf((value: CreateFieldFindingDto) => !value.catalogItemId)
+  @Transform(optionalText)
+  @IsString()
+  @MinLength(1)
+  @MaxLength(500)
+  customTitle?: string | null;
+
+  @IsOptional()
+  @Transform(optionalText)
+  @IsString()
+  @MaxLength(12000)
+  customLegalBasis?: string | null;
+
+  @Transform(({ value }) => (typeof value === 'string' ? value.trim() : value))
+  @IsString()
+  @MinLength(1)
+  @MaxLength(20000)
+  description!: string;
+
+  @IsOptional()
+  @Type(() => Number)
+  @IsInt()
+  @Min(1)
+  @Max(10)
+  severity?: number;
+
+  @IsOptional()
+  @Transform(optionalText)
+  @Matches(/^\d{4}-\d{2}-\d{2}$/)
+  correctionDueOn?: string | null;
+}