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What is the maximum length for a TSQ record?

I am familiar with CICS, but I don't know what is the maximum limit for TSQ use. Someone told me it is 542 bytes, but what is the exact limit?
The maximum record length for a TSQ record is governed by the CISIZE of the DFHTEMP file. For performance info, a very crude rule is that 170 bytes are reserved in each CI for VSAM & CICS control info. The maximum TSQ record size is 32763 (as it says in the API book for WRITEQ TS).

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