A developer tries to add a new LSI to an existing DynamoDB table but receives an error. What is the reason?

medium📝 Debug Q7 of 15

AWS - DynamoDB

ALSIs must have a HASH key different from the base table.

BLSIs require a different partition key than the base table.

CLSIs consume separate read and write capacity units.

DLSIs can only be defined when the table is created and cannot be added later.

Step-by-Step Solution

Solution:

Step 1: Recall LSI modification rules
LSIs must be created with the table; they cannot be added or removed after creation.
Step 2: Analyze other options
Claims about different partition key, separate capacity units, or different HASH key are incorrect or describe GSI traits.
Final Answer:
LSIs can only be defined when the table is created and cannot be added later. -> Option D
Quick Check:
LSI modification = Only at table creation [OK]

Quick Trick: LSIs fixed at creation, no later additions allowed [OK]

Common Mistakes:

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