Error in Update to 7.2.31

Hi,
While updating ERP to 7.2.31, I am getting the following error:
Executing erpnext.patches.v8_0.manufacturer_childtable_migrate in shNew (fe530933b3)
Traceback (most recent call last):
File “/usr/lib/python2.7/runpy.py”, line 162, in _run_module_as_main
main”, fname, loader, pkg_name)
File “/usr/lib/python2.7/runpy.py”, line 72, in _run_code
exec code in run_globals
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/utils/bench_helper.py”, line 79, in
main()
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/utils/bench_helper.py”, line 16, in main
click.Group(commands=commands)(prog_name=‘bench’)
File “/home/amitsaxena/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py”, line 716, in call
return self.main(*args, **kwargs)
File “/home/amitsaxena/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py”, line 696, in main
rv = self.invoke(ctx)
File “/home/amitsaxena/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py”, line 1060, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File “/home/amitsaxena/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py”, line 1060, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File “/home/amitsaxena/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py”, line 889, in invoke
return ctx.invoke(self.callback, **ctx.params)
File “/home/amitsaxena/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py”, line 534, in invoke
return callback(*args, **kwargs)
File “/home/amitsaxena/frappe-bench/env/local/lib/python2.7/site-packages/click/decorators.py”, line 17, in new_func
return f(get_current_context(), *args, **kwargs)
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/commands/init.py”, line 24, in _func
ret = f(frappe._dict(ctx.obj), *args, **kwargs)
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/commands/site.py”, line 210, in migrate
migrate(context.verbose, rebuild_website=rebuild_website)
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/migrate.py”, line 31, in migrate
frappe.modules.patch_handler.run_all()
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/modules/patch_handler.py”, line 29, in run_all
if not run_single(patchmodule = patch):
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/modules/patch_handler.py”, line 63, in run_single
return execute_patch(patchmodule, method, methodargs)
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/modules/patch_handler.py”, line 83, in execute_patch
frappe.get_attr(patchmodule.split()[0] + “.execute”)()
File “/home/amitsaxena/frappe-bench/apps/erpnext/erpnext/patches/v8_0/manufacturer_childtable_migrate.py”, line 25, in execute
item_doc.save()
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/model/document.py”, line 231, in save
return self._save(*args, **kwargs)
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/model/document.py”, line 281, in _save
self.run_post_save_methods()
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/model/document.py”, line 790, in run_post_save_methods
self.run_method(“on_update”)
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/model/document.py”, line 667, in run_method
out = Document.hook(fn)(self, *args, **kwargs)
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/model/document.py”, line 890, in composer
return composed(self, method, *args, **kwargs)
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/model/document.py”, line 873, in runner
add_to_return_value(self, fn(self, *args, **kwargs))
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/model/document.py”, line 661, in
fn = lambda self, *args, **kwargs: getattr(self, method)(*args, **kwargs)
File “/home/amitsaxena/frappe-bench/apps/erpnext/erpnext/stock/doctype/item/item.py”, line 102, in on_update
self.update_variants()
File “/home/amitsaxena/frappe-bench/apps/erpnext/erpnext/stock/doctype/item/item.py”, line 623, in update_variants
variant.save()
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/model/document.py”, line 231, in save
return self._save(*args, **kwargs)
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/model/document.py”, line 267, in _save
self._validate()
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/model/document.py”, line 400, in _validate
self._validate_mandatory()
File “/home/amitsaxena/frappe-bench/apps/frappe/frappe/model/document.py”, line 620, in _validate_mandatory
name=self.name))
frappe.exceptions.MandatoryError: [Item, SH/090415/01/A001/01-10]: manufacturer

Kindly let me know, how to correct it.

regards,

Amit

I got this error as well when upgrading to v8,0.

I think it’s to do with having Items where a manufacturer’s part number is present but no manufacturer (potentially only if there are variants with this property).

Don’t know what the fix is though…