Development Notes: Magento 2.3.4 | the stock item was unable to be saved. Please try again.
Environment:
Magento 2.3.4, Elastic Seach, Disabled MSI.
Problem:
Editing the stock quantity of some select products would trigger the error:
'the stock item was unable to be saved. Please try again.'.
The change in quantity could not be saved.
Consequential Problems:
- Overselling occurred due to the stock quantity not correctly changing to 0 and forcing product out of stock.
- Duplicate orders occurred
- Duplicate charges occurred
What we tried:
- Changing the method of save for all indexes.
- Switching from Elastic Search to default MYSQL.
- Reindexing / Cache Refresh
How we recreated the problem:
Identified a problem product (indicated in our ERP logs) and attempted to save it from 1 to 0. It would save for a quantity of 1 but not for 0. Changing the same product from 'enabled' to 'disabled' would result in the following error:
'Unable to rollback transaction'.
Solution for this case:
After investigating the MYSQL logs, we found a crashed M2EPRO log table which was repaired. We emptied the log table which contained 24959 rows.
Conclusion
This problem was evident for a select number of products. It stopped inventory changes and it also impacted the order confirmation process, presumably as the inventory attempted to update for these selected products.
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