URL_LIFETIME
Time period for validity, lifetime. This parameter can have two different meanings:

a. This parameter is used only for R/3 System URLs. It specifies the lifetime of the URL and the URL that this URL points to. If the content of the document is in the R/3 database, URL_LIFETIME is used to control the lifetime of the table, on the client.
For more information, see the documentation for the function module DP_CREATE_URL, in particular the documentation for the parameter LIFETIME .

b. If GET_WITH_URL returns a general URL on an external content server, the lifetime results from the validity of the URL, which is a maximum of two hours. The prerequisite for this is the use of a digital signature.