Instructions here: https://communities.sas.com/t5/SAS-Communities-Library/How-to-create-a-data-step-version-of-your-data-AKA-generate/ta-p/258712 will help with converting a SAS dataset to data step code.
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Thank you very much for your respone. That was actually my mistake in defining variable "Interval". Iused the folloing informat with other formats and it worked. input STID $ Interval : B8601DT.; Thank you.
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