Token services reached the maximum possible number of blocks (number ): free chain head=address
While starting a new transaction, the maximum number of blocks available for LUW token to RRS context mapping has been reached. The maximum number of blocks is 255, each of which can hold 256 LUW tokens. Therefore, the maximum number of concurrent extended mode transactions (65280) has been exceeded.
The ECI request will fail. CICS® TG will release blocks as transactions complete, which might allow subsequent transactions to start.
If the problem persists the Gateway daemon should be restarted. Check that the application programs are ending their transactions when the associated ECI requests complete.