Remove the deprecated method substr from application

[dheepak-aot]

Describe the task Substr is a deprecated method which needs to be removed across the application. Note: As this method is widely used at file integration to parse the record data, make sure that the replacement of substr exactly replaces the logic what substr does. The OOTB method subString is not exactly the replacement of substr.

Acceptance Criteria

• [ ] Replace all substr with an equivalent method.

Additional context

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