fix: timeout error while cancelling the Purchase Receipt

[rohitwaghchaure]

Issue

While cancelling the Purchase Receipt, user were getting the timeout error.
After profiling came to know that system is taking 10 mins to submit the Purchase Receipt and causing the timeout error

Investigation

• On cancellation of the Purchase Receipt, the system deletes the batches which were created against the respective Purchase Receipt.
• While deleting batches, the system checks whether the batch has been linked to any document or not.
• If the batch is linked to any document, then the system won't allow deleting that batch.
• In the Processlist, it was found that the document "Sales Invoice Item, Delivery Note Item, Stock Reconciliation Item, Pick List Item" took a lot of time to check whether the respective batch is linked or not.

Solution

Added indexing for the batch_no column in the document "Sales Invoice Item, Delivery Note Item, Stock Reconciliation Item, Pick List Item". After that system has took 13 seconds to cancel the Purchase Receipt

[frappe-pr-bot]

🎉 This PR is included in version 14.32.0 🎉

The release is available on GitHub release

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