Error trying to change a parameter

[Em4401]

Updating AB

• Yes, I have updated AB and still experience this issue

What happened?

Hi,

I'm trying to rename a parameter and keep getting this error. What is wrong?

Relevant errors

<Model: ExchangeDataset> instance matching query does not exist:
SQL: SELECT "t1"."id", "t1"."data", "t1"."input_code", "t1"."input_database", "t1"."output_code", "t1"."output_database", "t1"."type" FROM "exchangedataset" AS "t1" WHERE ("t1"."id" = ?) LIMIT ? OFFSET ?
Params: [743599, 1, 0]

Operating system

Mac

Conda environment

[mrvisscher]

Hi @Em4401

Seems to me one of your parameterized exchanges has broken. Any idea how that may have happened?

It should have the same fix as described here: #1397 Only in your case the exchange ID is: 743599

[Em4401]

Thank you! Following the fix worked. Unfortunately, I don't really know what caused it.

I was testing putting a parameter in the "Formula" under "Products" (not Technosphere Flows) in the activity details. If that helps.

But, I am also still having the problem of the visual bug (when the AB fails to open a certain activity), and keep having to rebuild activities. This: #1473

[mrvisscher]

Interesting, that should just work out of the box.

The issues you mention are likely linked. When a faulty parameter is in place, it will also break activities it is connected to, causing them to fail to open in the AB. Faulty parameters/parameterized exchanges can happen for a lot of reasons, and although we try to have safeguards in place, we are limited by their implementation in Brightway.

I don't have a fix for this right now I'm afraid.

[Em4401]

Okay, that's alright. I'll just have to work around it :)