COMTI May Generate 1507 Error When Converting COMP-3 Data Type

ID: Q249281

The information in this article applies to:

Microsoft SNA Server, versions 4.0, 4.0 SP1, 4.0 SP2, 4.0 SP3
Microsoft COM Transaction Integrator for CICS and IMS, versions 1.0, 1.0 SP1, 4.0 SP2, 4.0 SP3

SYMPTOMS

When a COM Transaction Integrator for CICS and IMS (COMTI) method contains an input parameter that is defined as a float or double Automation data type and is assigned the maximum possible numeric value for the data type, COMTI may generate a 1507 exception error if the Error Handling option is set to Rounded in Component Builder (CB) for the data type. Additionally, if the parameter is returned from the host, COMTI may generate a 1564 exception error when it attempts to process or convert the arriving data. For example, a COBOL data type of PIC 9(3)V9(8) with an Automation input mapping of double causes the following Windows NT event to occur if a value of 999.999999999 is assigned to the variable and the 'Rounded' option is set in CB:

(1507) The magnitude of the sending field exceeds the output field for parameter Parameter1 in method Method1.

The size of the number in the parameter is too large to be placed into the resulting data type. Check for a client application error and correct. If the client application is correct consider modifying the data conversion mapping so that the parameter is converted to a data type capable of accepting the numeric value.

If the PIC 9(3)V9(8) field is returned from the host program with a value of 999.99999999, then the following error message is posted:

(1564) An error occurred when attempting to acquire the allow variable length property for parameter Parameter1 in method Method1.

The COM Transaction Integrator runtime is unable to correctly read the COM Transaction Integrator-created component library. Try to open the component library with the COM Transaction Integrator Component Builder on the runtime computer. If you cannot open the component library, rebuild it, or attempt to acquire a new copy from the original source and re-deploy it. If you can open the component library with the COM Transaction Integrator, try shutting down MTS Server processes, and then remove the component library from the MTS package and re-deploy it.

CAUSE

COMTI does not handle the conversion of float or double data types when the maximum numeric value is used.

RESOLUTION

A supported fix that corrects this problem is now available from Microsoft, but it has not been fully regression tested and should be applied only to systems experiencing this specific problem. If you are not severely affected by this specific problem, Microsoft recommends that you wait for the next Product Name service pack that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

http://www.microsoft.com/support/supportnet/overview/overview.asp

The English version of this fix should have the following file attributes or later:

File name	Date	Time
Convertprim.dll	xx/xx/xx	xx:xx

NOTE: Date and time information will be provided as soon as it becomes available.

NOTE: Because of file dependencies, the most recent fix that contains the above files may also contain additional files.

STATUS

Microsoft has confirmed this to be a problem in Microsoft SNA Server version 4.0, 4.0SP1, 4.0SP2, and 4.0SP3.

MORE INFORMATION

One of the primary features of COMTI is the ability to convert and format a method's parameters from the representation understandable by the Windows NT platform into the representation understandable by a mainframe transaction program (TP). The conversion is defined at design time and implemented at run time. At design time, the developer uses CB to associate or map an Automation data type with a COBOL data type. COMTI provides default mappings between standard Automation data types and COBOL data types, and the developer can either accept the default mappings or override the default with other mappings supported by COMTI. The mappings are recorded by CB in the COMTI component library (typelib). When a developer uses the Floating Point Binary data type, the likelihood of a data conversion precision problem increases if fractions are involved. COMTI's CB offers the following three options to handle data precision errors:

Round (default)

Truncate

Error

When you define a COBOL data type of PIC 9(N)v9(N)COMP-3 (or DISPLAY), the default value presented in CB is of type Double and the precision error handler is set to Round. Under these circumstances, if the maximum value for the parameter is used, whether you are sending or receiving data, COMTI generates an error.

Additional query words:

Keywords :
Version : WINDOWS:1.0,1.0 SP1,4.0,4.0 SP1,4.0 SP2,4.0 SP3
Platform : WINDOWS
Issue type :