Thanks David,

EASIER is in the eye of the beholder.  PCML doesn't exactly look easy and I am up against the same unknowns.  Here is the PCML so far:

<pcml version="1.0">

<!-- PCML source for calling "Renew Certificate" (QYCDRNWC) API -->

  <!-- Format RNWC0300 - Other formats are available -->
  <struct name="rnwc0300">
    <data name="offsettofile"               type="int" length="4"  usage="input"/>
    <data name="lengthoffilename"    type="int"    length="4" usage="input"/>
    <data name="certfile"                      type="char" length="lengthoffilename" usage="input"/>

  <!-- Program QYCDRNWC and its parameter list for retrieving RNWC0300 format -->
  <program name="qycdrnwc" path="/QSYS.LIB/QICSS.LIB/QYCDRNWC.SRVPGM">
    <data name="certreqdata"          type="struct" struct="rnwc0300"   usage="input"/>
    <data name="reqdataLength"     type="int" length="4"          usage="input" />   ???????????
    <data name="format"                   type="char" length="8"          usage="input"    init="RNWC0300"/>
    <data name="errorCode"             type="int" length="4"          usage="input"    init="0"/>

The structure for the RNWC0300 format is:

Dec Hex Type Field
0 0 Binary (4) Offset to certificate path and file name
4 4 Binary (4) Length of certificate path and file name
Char (*) Certificate path and file name

So my first "stump the chump" query was "What PCML data type is a Char(*)??" You can see my guess above. Is that correct? Just a character string of a certain length?  But, I think it is a pointer to the character string but couldn't find a good example of a Char(*) as an input parameter in a format structure.

The second conundrum was: How do I get the length of the structure? The parameters needed by the API are:

Required Parameter Group:

1 Certificate request data Input Char(*)

2 Length of certificate request data Input Binary(4)

3 Format name Input Char(8)

4 Error Code I/O Char(*)

Not sure if the whole thing is OK but I couldn't figure out how to get the length of the certificate request data (structure). I saw documentation in the PCML docs on "offset" and "offsetfrom" but didn't know if that is how to go about it.

This hasn't exactly been *easy* but I am willing to press on with a little hand-holding.....

Pete Helgren
GIAC Secure Software Programmer-Java
AWS Certified Cloud Practitioner
Microsoft Certified: Azure Fundamentals
Twitter - Sys_i_Geek IBM_i_Geek

On 4/2/2022 5:16 PM, David Gibbs via JAVA400-L wrote:
Use pcml. It handles memory allocation and is much easier to use.

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