Regression with .copy Method on an Ecoinvent Activity

[omaggiori]

Context:

I recently upgraded Brightway data to version 4.3 from 4.0.dev46. I was previously copying an activity from ecoinvent to my foreground database to customize and analyze exchanges.

Environment Details:

• Python version : 3.11
• Ecoinvent version : 3.10
• Other used libraries : bw2io (0.9.4)

Error :

The call to the recalculate method is failing as parameters from this copied activity seems not to be initialized.

---

Steps to Reproduce:

Here’s how to reproduce the issue, requiring username and password from ecoinvent to be set :

bw2data.projects.set_current("TEMPLATE 3.10")

bw2io.import_ecoinvent_release(
    version="3.10",
    system_model="cutoff",
)
eidb = bw2data.Database("ecoinvent-3.10-cutoff")
fgdb = bw2data.Database("foreground_db")
fgdb.register()
act = eidb.get(
    location="GLO",
    name="consumer electronics production, mobile device, smartphone",

)

copied = act.copy(name="copiedActivity", database="foreground_db")
bw2data.parameters.add_exchanges_to_group("LCA", activity=copied)
bw2data.parameters.recalculate()

Error Message :

{
	"name": "MissingName",
	"message": "The following variables aren't defined:
polyeth|steel|plugs|int_cable|pc|gl_fibre|lcd|brass|pwb|ind|el_speaker|datacable|BP_used_smartphone|tap_water_input|co|fraction_TW_to_air|el_conn|el_comp|ferrite|batt",
	"stack": "---------------------------------------------------------------------------
MissingName                               Traceback (most recent call last)
Cell In[13], line 11
      9 copied = act.copy(name=\"copiedActivity\", database=\"foreground_db\")
     10 bw2data.parameters.add_exchanges_to_group(\"LCA\", activity=copied)
---> 11 bw2data.parameters.recalculate()

File ~/.local/share/virtualenvs/test-brightway-iPK9PK7q/lib/python3.12/site-packages/bw2data/parameters.py:1621, in ParameterManager.recalculate(self)
   1619 if obj.name in databases or obj.name == \"project\":
   1620     continue
-> 1621 ActivityParameter.recalculate(obj.name)

File ~/.local/share/virtualenvs/test-brightway-iPK9PK7q/lib/python3.12/site-packages/bw2data/parameters.py:811, in ActivityParameter.recalculate(group, signal)
    808 if not ActivityParameter.expired(group):
    809     return
--> 811 chain = ActivityParameter.dependency_chain(group)
    813 # Reset dependencies and dependency order
    814 if chain:

File ~/.local/share/virtualenvs/test-brightway-iPK9PK7q/lib/python3.12/site-packages/bw2data/parameters.py:781, in ActivityParameter.dependency_chain(group, include_self)
    779         chain.append({\"kind\": \"project\", \"group\": \"project\", \"names\": names})
    780 if needed:
--> 781     raise MissingName(
    782         \"The following variables aren't defined:\
{}\".format(\"|\".join(needed))
    783     )
    785 return chain

MissingName: The following variables aren't defined:
polyeth|steel|plugs|int_cable|pc|gl_fibre|lcd|brass|pwb|ind|el_speaker|datacable|BP_used_smartphone|tap_water_input|co|fraction_TW_to_air|el_conn|el_comp|ferrite|batt"
}

---

Question:

Has anyone encountered an error with this .copy method ?

Thank you in advance for your help!