The maximum number of /COPY specifications and externally defined files was reached.
50
Cause . . . . . : The maximum sequence number for /COPY specifications and externally-described files has been reached. Only a maximum of 2048 /COPY directives are allowed in a compiled object, or 2048 minus twice the number of externally-described files. The compilation stops immediately.
Recovery . . . : Reduce the number of /COPY directives or externally-described files used in the compiled object.
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