{"record":{"id":"eb5bd364a9a6eb02","repo":"nopSolutions/nopCommerce","slug":"no-product-category-mapping-found-with-the-specifi","errorCode":null,"errorMessage":"No product category mapping found with the specified id","messagePattern":"No product category mapping found with the specified id","errorType":"exception","errorClass":"ArgumentException","httpStatus":null,"severity":"warning","filePath":"src/Presentation/Nop.Web/Areas/Admin/Controllers/CategoryController.cs","lineNumber":477,"sourceCode":"    [CheckPermission(StandardPermission.Catalog.CATEGORIES_VIEW)]\n    public virtual async Task<IActionResult> ProductList(CategoryProductSearchModel searchModel)\n    {\n        //try to get a category with the specified id\n        var category = await _categoryService.GetCategoryByIdAsync(searchModel.CategoryId)\n            ?? throw new ArgumentException(\"No category found with the specified id\");\n\n        //prepare model\n        var model = await _categoryModelFactory.PrepareCategoryProductListModelAsync(searchModel, category);\n\n        return Json(model);\n    }\n\n    [CheckPermission(StandardPermission.Catalog.CATEGORIES_CREATE_EDIT_DELETE)]\n    public virtual async Task<IActionResult> ProductUpdate(CategoryProductModel model)\n    {\n        //try to get a product category with the specified id\n        var productCategory = await _categoryService.GetProductCategoryByIdAsync(model.Id)\n            ?? throw new ArgumentException(\"No product category mapping found with the specified id\");\n\n        //fill entity from product\n        productCategory = model.ToEntity(productCategory);\n        await _categoryService.UpdateProductCategoryAsync(productCategory);\n\n        return new NullJsonResult();\n    }\n\n    [CheckPermission(StandardPermission.Catalog.CATEGORIES_CREATE_EDIT_DELETE)]\n    public virtual async Task<IActionResult> ProductDelete(int id)\n    {\n        //try to get a product category with the specified id\n        var productCategory = await _categoryService.GetProductCategoryByIdAsync(id)\n            ?? throw new ArgumentException(\"No product category mapping found with the specified id\", nameof(id));\n\n        await _categoryService.DeleteProductCategoryAsync(productCategory);\n\n        return new NullJsonResult();","sourceCodeStart":459,"sourceCodeEnd":495,"githubUrl":"https://github.com/nopSolutions/nopCommerce/blob/64bdf2ff08c8b39e65717bcf974fb43dc2ef68f2/src/Presentation/Nop.Web/Areas/Admin/Controllers/CategoryController.cs#L459-L495","documentation":"Thrown by CategoryController.ProductUpdate (permission: CATEGORIES_CREATE_EDIT_DELETE). It loads the product-category mapping by model.Id and throws ArgumentException if missing — the mapping was removed or the id is invalid before an update.","triggerScenarios":"POST ProductUpdate with a model.Id that GetProductCategoryByIdAsync cannot resolve: another admin removed the product from the category, or the grid row is stale.","commonSituations":"Concurrent catalog management; inline-editing a mapping that was just deleted; bulk product reassignment purging the row mid-edit.","solutions":["Refresh the category product grid and edit only existing mappings.","Make ProductUpdate return a 'record changed' JSON result instead of throwing on a missing mapping.","On the client, warn the user when an update targets a row that no longer exists."],"exampleFix":"// before\nvar productCategory = await _categoryService.GetProductCategoryByIdAsync(model.Id)\n    ?? throw new ArgumentException(\"No product category mapping found with the specified id\");\n\n// after\nvar productCategory = await _categoryService.GetProductCategoryByIdAsync(model.Id);\nif (productCategory == null)\n    return Json(new { success = false, reason = \"mapping_removed\" });\n","handlingStrategy":"validation","validationCode":"// Confirm the mapping exists before updating.\nvar mapping = await _categoryService.GetProductCategoryByIdAsync(model.Id);\nif (mapping == null) return Json(new { success = false, reason = \"mapping_removed\" });","typeGuard":"static bool ProductCategoryMappingExists(ProductCategory m) => m is not null;","tryCatchPattern":"try { /* ProductUpdate body */ }\ncatch (ArgumentException)\n{\n    return Json(new { success = false, reason = \"mapping_removed\" });\n}","preventionTips":["Refresh the grid before inline-editing a mapping.","Warn the user when an update targets a removed row.","Coordinate concurrent catalog edits."],"tags":["nopcommerce","admin","category","product-mapping","not-found","concurrency"],"backgroundTag":null,"analyzedSha":"64bdf2ff08c8b39e65717bcf974fb43dc2ef68f2","analyzedAt":"2026-08-13T21:19:38.062Z","schemaVersion":2},"datasetVersion":"2026-08-14T00:17:13.853Z"}